115811342631 has 6 divisors (see below), whose sum is σ = 167283050480. Its totient is φ = 77207561748.

The previous prime is 115811342627. The next prime is 115811342651. The reversal of 115811342631 is 136243118511.

115811342631 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 1 + 13 + 4 + 2 + 631 = 666.

It is not a de Polignac number, because 115811342631 - 2² = 115811342627 is a prime.

It is a super-2 number, since 2×115811342631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115811342651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6433963471 + ... + 6433963488.

Almost surely, 2^115811342631 is an apocalyptic number.

115811342631 is a deficient number, since it is larger than the sum of its proper divisors (51471707849).

115811342631 is a wasteful number, since it uses less digits than its factorization.

115811342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12867926965 (or 12867926962 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The spelling of 115811342631 in words is "one hundred fifteen billion, eight hundred eleven million, three hundred forty-two thousand, six hundred thirty-one".