31330679 has 2 divisors, whose sum is σ = 31330680. Its totient is φ = 31330678.

The previous prime is 31330597. The next prime is 31330681. The reversal of 31330679 is 97603313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31330679 is a prime.

It is a super-2 number, since 2×31330679² = 1963222893202082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 31330681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31330279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665339 + 15665340.

It is an arithmetic number, because the mean of its divisors is an integer number (15665340).

Almost surely, 2^31330679 is an apocalyptic number.

31330679 is a deficient number, since it is larger than the sum of its proper divisors (1).

31330679 is an equidigital number, since it uses as much as digits as its factorization.

31330679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 31330679 is about 5597.3814413527. The cubic root of 31330679 is about 315.2510939905.

The spelling of 31330679 in words is "thirty-one million, three hundred thirty thousand, six hundred seventy-nine".