131857522 has 16 divisors (see below), whose sum is σ = 203620032. Its totient is φ = 64002960.

The previous prime is 131857501. The next prime is 131857543. The reversal of 131857522 is 225758131.

It is an interprime number because it is at equal distance from previous prime (131857501) and next prime (131857543).

It is a super-2 number, since 2×131857522² = 34772812215960968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9772 + ... + 18952.

It is an arithmetic number, because the mean of its divisors is an integer number (12726252).

Almost surely, 2^131857522 is an apocalyptic number.

131857522 is a deficient number, since it is larger than the sum of its proper divisors (71762510).

131857522 is a wasteful number, since it uses less digits than its factorization.

131857522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393.

The product of its digits is 16800, while the sum is 34.

The square root of 131857522 is about 11482.9230599181. The cubic root of 131857522 is about 508.9810772863.

The spelling of 131857522 in words is "one hundred thirty-one million, eight hundred fifty-seven thousand, five hundred twenty-two".