11681852931 has 24 divisors (see below), whose sum is σ = 19288648704. Its totient is φ = 6673849200.

The previous prime is 11681852929. The next prime is 11681852933. The reversal of 11681852931 is 13925818611.

11681852931 is a `hidden beast` number, since 1 + 16 + 81 + 8 + 529 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (11681852929) and next prime (11681852933).

It is not a de Polignac number, because 11681852931 - 2¹ = 11681852929 is a prime.

It is a super-2 number, since 2×11681852931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11681852933) 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, 302256 + ... + 338706.

It is an arithmetic number, because the mean of its divisors is an integer number (803693696).

Almost surely, 2^11681852931 is an apocalyptic number.

11681852931 is a deficient number, since it is larger than the sum of its proper divisors (7606795773).

11681852931 is a wasteful number, since it uses less digits than its factorization.

11681852931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41551 (or 41548 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The spelling of 11681852931 in words is "eleven billion, six hundred eighty-one million, eight hundred fifty-two thousand, nine hundred thirty-one".