68012831 has 2 divisors, whose sum is σ = 68012832. Its totient is φ = 68012830.

The previous prime is 68012803. The next prime is 68012843. The reversal of 68012831 is 13821086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68012831 - 2²⁶ = 903967 is a prime.

It is a super-2 number, since 2×68012831² = 9251490361269122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68012794 and 68012803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68012881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34006415 + 34006416.

It is an arithmetic number, because the mean of its divisors is an integer number (34006416).

Almost surely, 2^68012831 is an apocalyptic number.

68012831 is a deficient number, since it is larger than the sum of its proper divisors (1).

68012831 is an equidigital number, since it uses as much as digits as its factorization.

68012831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68012831 is about 8246.9892081899. The cubic root of 68012831 is about 408.1911809873.

The spelling of 68012831 in words is "sixty-eight million, twelve thousand, eight hundred thirty-one".