431590631 has 2 divisors, whose sum is σ = 431590632. Its totient is φ = 431590630.

The previous prime is 431590609. The next prime is 431590651. The reversal of 431590631 is 136095134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431590631 is a prime.

It is a super-2 number, since 2×431590631² = 372540945533956322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431590651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215795315 + 215795316.

It is an arithmetic number, because the mean of its divisors is an integer number (215795316).

Almost surely, 2^431590631 is an apocalyptic number.

431590631 is a deficient number, since it is larger than the sum of its proper divisors (1).

431590631 is an equidigital number, since it uses as much as digits as its factorization.

431590631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 431590631 is about 20774.7594691250. The cubic root of 431590631 is about 755.7137708518.

The spelling of 431590631 in words is "four hundred thirty-one million, five hundred ninety thousand, six hundred thirty-one".