513392431 has 2 divisors, whose sum is σ = 513392432. Its totient is φ = 513392430.

The previous prime is 513392387. The next prime is 513392443. The reversal of 513392431 is 134293315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513392431 - 2⁹ = 513391919 is a prime.

It is a super-2 number, since 2×513392431² = 527143576416179522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 513392393 and 513392402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513392491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256696215 + 256696216.

It is an arithmetic number, because the mean of its divisors is an integer number (256696216).

Almost surely, 2^513392431 is an apocalyptic number.

513392431 is a deficient number, since it is larger than the sum of its proper divisors (1).

513392431 is an equidigital number, since it uses as much as digits as its factorization.

513392431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 513392431 is about 22658.1647756388. The cubic root of 513392431 is about 800.7245680325.

The spelling of 513392431 in words is "five hundred thirteen million, three hundred ninety-two thousand, four hundred thirty-one".