68118331 has 2 divisors, whose sum is σ = 68118332. Its totient is φ = 68118330.

The previous prime is 68118317. The next prime is 68118359. The reversal of 68118331 is 13381186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68118331 - 2⁵ = 68118299 is a prime.

It is a super-2 number, since 2×68118331² = 9280214036451122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68118293 and 68118302.

It is not a weakly prime, because it can be changed into another prime (68118301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34059165 + 34059166.

It is an arithmetic number, because the mean of its divisors is an integer number (34059166).

Almost surely, 2^68118331 is an apocalyptic number.

68118331 is a deficient number, since it is larger than the sum of its proper divisors (1).

68118331 is an equidigital number, since it uses as much as digits as its factorization.

68118331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 68118331 is about 8253.3830033508. The cubic root of 68118331 is about 408.4021309968.

The spelling of 68118331 in words is "sixty-eight million, one hundred eighteen thousand, three hundred thirty-one".