31536932131 has 2 divisors, whose sum is σ = 31536932132. Its totient is φ = 31536932130.

The previous prime is 31536932117. The next prime is 31536932143. The reversal of 31536932131 is 13123963513.

It is a strong prime.

It is an emirp because it is prime and its reverse (13123963513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31536932131 - 2⁷ = 31536932003 is a prime.

It is a super-2 number, since 2×31536932131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31536932111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768466065 + 15768466066.

It is an arithmetic number, because the mean of its divisors is an integer number (15768466066).

Almost surely, 2^31536932131 is an apocalyptic number.

31536932131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31536932131 is an equidigital number, since it uses as much as digits as its factorization.

31536932131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 37.

The spelling of 31536932131 in words is "thirty-one billion, five hundred thirty-six million, nine hundred thirty-two thousand, one hundred thirty-one".