68322531 has 16 divisors (see below), whose sum is σ = 93340800. Its totient is φ = 44438208.

The previous prime is 68322511. The next prime is 68322547. The reversal of 68322531 is 13522386.

It is not a de Polignac number, because 68322531 - 2⁶ = 68322467 is a prime.

It is a super-2 number, since 2×68322531² = 9335936484491922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68322511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23215 + ... + 25991.

It is an arithmetic number, because the mean of its divisors is an integer number (5833800).

Almost surely, 2^68322531 is an apocalyptic number.

68322531 is a deficient number, since it is larger than the sum of its proper divisors (25018269).

68322531 is a wasteful number, since it uses less digits than its factorization.

68322531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its digits is 8640, while the sum is 30.

The square root of 68322531 is about 8265.7444310842. The cubic root of 68322531 is about 408.8098162702.

The spelling of 68322531 in words is "sixty-eight million, three hundred twenty-two thousand, five hundred thirty-one".