68816031 has 16 divisors (see below), whose sum is σ = 93327360. Its totient is φ = 45096480.

The previous prime is 68816021. The next prime is 68816089. The reversal of 68816031 is 13061886.

It is not a de Polignac number, because 68816031 - 2⁹ = 68815519 is a prime.

It is a super-2 number, since 2×68816031² = 9471292245185922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68815983 and 68816001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816021) 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, 68946 + ... + 69936.

It is an arithmetic number, because the mean of its divisors is an integer number (5832960).

Almost surely, 2^68816031 is an apocalyptic number.

68816031 is a deficient number, since it is larger than the sum of its proper divisors (24511329).

68816031 is a wasteful number, since it uses less digits than its factorization.

68816031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 68816031 is about 8295.5428393807. The cubic root of 68816031 is about 409.7917463106.

The spelling of 68816031 in words is "sixty-eight million, eight hundred sixteen thousand, thirty-one".