122975931 has 16 divisors (see below), whose sum is σ = 177166080. Its totient is φ = 75426720.

The previous prime is 122975893. The next prime is 122975947. The reversal of 122975931 is 139579221.

It is not a de Polignac number, because 122975931 - 2¹³ = 122967739 is a prime.

It is a super-2 number, since 2×122975931² = 30246159210633522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 122975931.

It is not an unprimeable number, because it can be changed into a prime (122975971) 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 in 15 ways as a sum of consecutive naturals, for example, 7060 + ... + 17198.

It is an arithmetic number, because the mean of its divisors is an integer number (11072880).

Almost surely, 2^122975931 is an apocalyptic number.

122975931 is a deficient number, since it is larger than the sum of its proper divisors (54190149).

122975931 is a wasteful number, since it uses less digits than its factorization.

122975931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466.

The product of its digits is 34020, while the sum is 39.

The square root of 122975931 is about 11089.4513389978. The cubic root of 122975931 is about 497.2865422660.

The spelling of 122975931 in words is "one hundred twenty-two million, nine hundred seventy-five thousand, nine hundred thirty-one".