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31130133201 = 3229791509779
BaseRepresentation
bin11100111111100000…
…000010001011010001
32222100111211121200100
4130333200002023101
51002223303230301
622145002443013
72151301523556
oct347740021321
988314747610
1031130133201
111222516a912
126049503469
132c2156657b
14171458ca2d
15c22e63286
hex73f8022d1

31130133201 has 24 divisors (see below), whose sum is σ = 47105136000. Its totient is φ = 19784130912.

The previous prime is 31130133179. The next prime is 31130133283. The reversal of 31130133201 is 10233103113.

It is a happy number.

31130133201 is a `hidden beast` number, since 31 + 1 + 301 + 332 + 0 + 1 = 666.

It is not a de Polignac number, because 31130133201 - 26 = 31130133137 is a prime.

It is a super-2 number, since 2×311301332012 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31130138201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 734271 + ... + 775508.

It is an arithmetic number, because the mean of its divisors is an integer number (1962714000).

Almost surely, 231130133201 is an apocalyptic number.

It is an amenable number.

31130133201 is a deficient number, since it is larger than the sum of its proper divisors (15975002799).

31130133201 is a wasteful number, since it uses less digits than its factorization.

31130133201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509893 (or 1509890 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31130133201 its reverse (10233103113), we get a palindrome (41363236314).

The spelling of 31130133201 in words is "thirty-one billion, one hundred thirty million, one hundred thirty-three thousand, two hundred one".

Divisors: 1 3 9 29 79 87 237 261 711 2291 6873 20619 1509779 4529337 13588011 43783591 119272541 131350773 357817623 394052319 1073452869 3458903689 10376711067 31130133201