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31335310412 = 2271517619739
BaseRepresentation
bin11101001011101110…
…101110010001001100
32222212210220200220022
4131023232232101030
51003133314413122
622221212241312
72156342513060
oct351356562114
988783820808
1031335310412
111231aa6955a
1260a6170238
132c54c141c3
14173391baa0
15c35e91642
hex74bbae44c

31335310412 has 48 divisors (see below), whose sum is σ = 63175042560. Its totient is φ = 13321584000.

The previous prime is 31335310403. The next prime is 31335310417. The reversal of 31335310412 is 21401353313.

It is not an unprimeable number, because it can be changed into a prime (31335310417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3212639 + ... + 3222377.

It is an arithmetic number, because the mean of its divisors is an integer number (1316146720).

Almost surely, 231335310412 is an apocalyptic number.

It is an amenable number.

31335310412 is an abundant number, since it is smaller than the sum of its proper divisors (31839732148).

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

31335310412 is a wasteful number, since it uses less digits than its factorization.

31335310412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10660 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 31335310412 its reverse (21401353313), we get a palindrome (52736663725).

The spelling of 31335310412 in words is "thirty-one billion, three hundred thirty-five million, three hundred ten thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 151 302 604 761 1057 1522 2114 3044 4228 5327 9739 10654 19478 21308 38956 68173 114911 136346 229822 272692 459644 804377 1470589 1608754 2941178 3217508 5882356 7411379 10294123 14822758 20588246 29645516 41176492 51879653 103759306 207518612 1119118229 2238236458 4476472916 7833827603 15667655206 31335310412