868127931 has 36 divisors (see below), whose sum is σ = 1389396736. Its totient is φ = 521912160.

The previous prime is 868127921. The next prime is 868127951. The reversal of 868127931 is 139721868.

It is not a de Polignac number, because 868127931 - 2⁶ = 868127867 is a prime.

It is a super-2 number, since 2×868127931² = 1507292209164681522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868127921) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 135165 + ... + 141441.

Almost surely, 2^868127931 is an apocalyptic number.

868127931 is a deficient number, since it is larger than the sum of its proper divisors (521268805).

868127931 is a wasteful number, since it uses less digits than its factorization.

868127931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432 (or 6418 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 868127931 is about 29464.0107758601. The cubic root of 868127931 is about 953.9550464690.

The spelling of 868127931 in words is "eight hundred sixty-eight million, one hundred twenty-seven thousand, nine hundred thirty-one".