185129352131 has 2 divisors, whose sum is σ = 185129352132. Its totient is φ = 185129352130.

The previous prime is 185129352061. The next prime is 185129352137. The reversal of 185129352131 is 131253921581.

It is a strong prime.

It is an emirp because it is prime and its reverse (131253921581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 185129352131 - 2¹⁴ = 185129335747 is a prime.

It is a super-2 number, since 2×185129352131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (185129352137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92564676065 + 92564676066.

It is an arithmetic number, because the mean of its divisors is an integer number (92564676066).

Almost surely, 2^185129352131 is an apocalyptic number.

185129352131 is a deficient number, since it is larger than the sum of its proper divisors (1).

185129352131 is an equidigital number, since it uses as much as digits as its factorization.

185129352131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 41.

The spelling of 185129352131 in words is "one hundred eighty-five billion, one hundred twenty-nine million, three hundred fifty-two thousand, one hundred thirty-one".