68427931 has 12 divisors (see below), whose sum is σ = 80834760. Its totient is φ = 57420480.

The previous prime is 68427923. The next prime is 68427973. The reversal of 68427931 is 13972486.

It is not a de Polignac number, because 68427931 - 2³ = 68427923 is a prime.

It is a super-2 number, since 2×68427931² = 9364763481881522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68427131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16546 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (6736230).

Almost surely, 2^68427931 is an apocalyptic number.

68427931 is a deficient number, since it is larger than the sum of its proper divisors (12406829).

68427931 is a wasteful number, since it uses less digits than its factorization.

68427931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36846 (or 36833 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 68427931 is about 8272.1176853331. The cubic root of 68427931 is about 409.0199295649.

Subtracting from 68427931 its reverse (13972486), we obtain a palindrome (54455445).

The spelling of 68427931 in words is "sixty-eight million, four hundred twenty-seven thousand, nine hundred thirty-one".