513231307 has 2 divisors, whose sum is σ = 513231308. Its totient is φ = 513231306.

The previous prime is 513231283. The next prime is 513231353. The reversal of 513231307 is 703132315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513231307 - 2⁷ = 513231179 is a prime.

It is not a weakly prime, because it can be changed into another prime (513231907) 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, 256615653 + 256615654.

It is an arithmetic number, because the mean of its divisors is an integer number (256615654).

Almost surely, 2^513231307 is an apocalyptic number.

513231307 is a deficient number, since it is larger than the sum of its proper divisors (1).

513231307 is an equidigital number, since it uses as much as digits as its factorization.

513231307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 513231307 is about 22654.6089571195. The cubic root of 513231307 is about 800.6407923236.

The spelling of 513231307 in words is "five hundred thirteen million, two hundred thirty-one thousand, three hundred seven".