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30323131412 = 2271814959671
BaseRepresentation
bin11100001111011001…
…100100010000010100
32220021021022200100012
4130033121210100110
5444100210201122
621532533535352
72122302235640
oct341731442024
986237280305
1030323131412
1111950687492
125a631a4558
132b23301712
14167931dc20
15bc71a67e2
hex70f664414

30323131412 has 24 divisors (see below), whose sum is σ = 60650620800. Its totient is φ = 12994693920.

The previous prime is 30323131381. The next prime is 30323131427. The reversal of 30323131412 is 21413132303.

It is a super-2 number, since 2×303231314122 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478337 + ... + 538007.

It is an arithmetic number, because the mean of its divisors is an integer number (2527109200).

Almost surely, 230323131412 is an apocalyptic number.

It is an amenable number.

30323131412 is an abundant number, since it is smaller than the sum of its proper divisors (30327489388).

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

30323131412 is a wasteful number, since it uses less digits than its factorization.

30323131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77831 (or 77829 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30323131412 its reverse (21413132303), we get a palindrome (51736263715).

The spelling of 30323131412 in words is "thirty billion, three hundred twenty-three million, one hundred thirty-one thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 18149 36298 59671 72596 119342 127043 238684 254086 417697 508172 835394 1670788 1082968979 2165937958 4331875916 7580782853 15161565706 30323131412