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30313411212 = 22371747451657
BaseRepresentation
bin11100001110110100…
…011111001010001100
32220020121000211201210
4130032310133022030
5444040213124322
621531545334420
72122123513110
oct341664371214
986217024653
1030313411212
1111946148567
125a5ba97410
132b212aa316
141677d0d740
15bc63d670c
hex70ed1f28c

30313411212 has 96 divisors (see below), whose sum is σ = 87412082688. Its totient is φ = 7978051584.

The previous prime is 30313411211. The next prime is 30313411267. The reversal of 30313411212 is 21211431303.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30313411211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158713 + ... + 292944.

It is an arithmetic number, because the mean of its divisors is an integer number (910542528).

Almost surely, 230313411212 is an apocalyptic number.

It is an amenable number.

30313411212 is an abundant number, since it is smaller than the sum of its proper divisors (57098671476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30313411212 is a wasteful number, since it uses less digits than its factorization.

30313411212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451735 (or 451733 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30313411212 its reverse (21211431303), we get a palindrome (51524842515).

The spelling of 30313411212 in words is "thirty billion, three hundred thirteen million, four hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 47 51 68 84 94 102 119 141 188 204 238 282 329 357 476 564 658 714 799 987 1316 1428 1598 1974 2397 3196 3948 4794 5593 9588 11186 16779 22372 33558 67116 451657 903314 1354971 1806628 2709942 3161599 5419884 6323198 7678169 9484797 12646396 15356338 18969594 21227879 23034507 30712676 37939188 42455758 46069014 53747183 63683637 84911516 92138028 107494366 127367274 148595153 161241549 214988732 254734548 297190306 322483098 360873943 445785459 594380612 644966196 721747886 891570918 1082621829 1443495772 1783141836 2165243658 2526117601 4330487316 5052235202 7578352803 10104470404 15156705606 30313411212