185288412131 has 2 divisors, whose sum is σ = 185288412132. Its totient is φ = 185288412130.

The previous prime is 185288412107. The next prime is 185288412157. The reversal of 185288412131 is 131214882581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 185288412131 - 2²² = 185284217827 is a prime.

It is a super-2 number, since 2×185288412131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (185288412031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92644206065 + 92644206066.

It is an arithmetic number, because the mean of its divisors is an integer number (92644206066).

Almost surely, 2^185288412131 is an apocalyptic number.

185288412131 is a deficient number, since it is larger than the sum of its proper divisors (1).

185288412131 is an equidigital number, since it uses as much as digits as its factorization.

185288412131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 44.

The spelling of 185288412131 in words is "one hundred eighty-five billion, two hundred eighty-eight million, four hundred twelve thousand, one hundred thirty-one".