68313031 has 2 divisors, whose sum is σ = 68313032. Its totient is φ = 68313030.

The previous prime is 68313017. The next prime is 68313041. The reversal of 68313031 is 13031386.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68313031 - 2⁷ = 68312903 is a prime.

It is a super-2 number, since 2×68313031² = 9333340408813922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68312987 and 68313005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68313041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34156515 + 34156516.

It is an arithmetic number, because the mean of its divisors is an integer number (34156516).

Almost surely, 2^68313031 is an apocalyptic number.

68313031 is a deficient number, since it is larger than the sum of its proper divisors (1).

68313031 is an equidigital number, since it uses as much as digits as its factorization.

68313031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 68313031 is about 8265.1697502229. The cubic root of 68313031 is about 408.7908675514.

The spelling of 68313031 in words is "sixty-eight million, three hundred thirteen thousand, thirty-one".