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31230114440 = 2357472373109
BaseRepresentation
bin11101000101011101…
…011011101010001000
32222121110222012011012
4131011131123222020
51002424402130230
622202533423052
72153624410220
oct350535335210
988543865135
1031230114440
1112276649238
126076a9aa88
132c391a1675
141723977080
15c2bb12395
hex74575ba88

31230114440 has 64 divisors (see below), whose sum is σ = 82014681600. Its totient is φ = 10479644928.

The previous prime is 31230114397. The next prime is 31230114467. The reversal of 31230114440 is 4441103213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1173395 + ... + 1199714.

It is an arithmetic number, because the mean of its divisors is an integer number (1281479400).

Almost surely, 231230114440 is an apocalyptic number.

It is an amenable number.

31230114440 is an abundant number, since it is smaller than the sum of its proper divisors (50784567160).

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

31230114440 is a wasteful number, since it uses less digits than its factorization.

31230114440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373174 (or 2373170 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31230114440 its reverse (4441103213), we get a palindrome (35671217653).

The spelling of 31230114440 in words is "thirty-one billion, two hundred thirty million, one hundred fourteen thousand, four hundred forty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 47 56 70 94 140 188 235 280 329 376 470 658 940 1316 1645 1880 2632 3290 6580 13160 2373109 4746218 9492436 11865545 16611763 18984872 23731090 33223526 47462180 66447052 83058815 94924360 111536123 132894104 166117630 223072246 332235260 446144492 557680615 664470520 780752861 892288984 1115361230 1561505722 2230722460 3123011444 3903764305 4461444920 6246022888 7807528610 15615057220 31230114440