431512979 has 2 divisors, whose sum is σ = 431512980. Its totient is φ = 431512978.

The previous prime is 431512957. The next prime is 431513003. The reversal of 431512979 is 979215134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431512979 - 2⁸ = 431512723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431512079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215756489 + 215756490.

It is an arithmetic number, because the mean of its divisors is an integer number (215756490).

Almost surely, 2^431512979 is an apocalyptic number.

431512979 is a deficient number, since it is larger than the sum of its proper divisors (1).

431512979 is an equidigital number, since it uses as much as digits as its factorization.

431512979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 431512979 is about 20772.8904825496. The cubic root of 431512979 is about 755.6684453348.

The spelling of 431512979 in words is "four hundred thirty-one million, five hundred twelve thousand, nine hundred seventy-nine".