31232412187 has 2 divisors, whose sum is σ = 31232412188. Its totient is φ = 31232412186.

The previous prime is 31232412163. The next prime is 31232412203. The reversal of 31232412187 is 78121423213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31232412187 - 2²⁷ = 31098194459 is a prime.

It is a super-2 number, since 2×31232412187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31232412157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616206093 + 15616206094.

It is an arithmetic number, because the mean of its divisors is an integer number (15616206094).

Almost surely, 2^31232412187 is an apocalyptic number.

31232412187 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232412187 is an equidigital number, since it uses as much as digits as its factorization.

31232412187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The spelling of 31232412187 in words is "thirty-one billion, two hundred thirty-two million, four hundred twelve thousand, one hundred eighty-seven".