680359931 has 2 divisors, whose sum is σ = 680359932. Its totient is φ = 680359930.

The previous prime is 680359909. The next prime is 680359949. The reversal of 680359931 is 139953086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680359931 - 2¹⁰ = 680358907 is a prime.

It is a super-2 number, since 2×680359931² = 925779271420649522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (680359831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340179965 + 340179966.

It is an arithmetic number, because the mean of its divisors is an integer number (340179966).

Almost surely, 2^680359931 is an apocalyptic number.

680359931 is a deficient number, since it is larger than the sum of its proper divisors (1).

680359931 is an equidigital number, since it uses as much as digits as its factorization.

680359931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 680359931 is about 26083.7100696968. The cubic root of 680359931 is about 879.5210595455.

The spelling of 680359931 in words is "six hundred eighty million, three hundred fifty-nine thousand, nine hundred thirty-one".