1513263431 has 2 divisors, whose sum is σ = 1513263432. Its totient is φ = 1513263430.

The previous prime is 1513263391. The next prime is 1513263457. The reversal of 1513263431 is 1343623151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1513263431 - 2²² = 1509069127 is a prime.

It is a super-2 number, since 2×1513263431² = 4579932423203783522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1513263394 and 1513263403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513263131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756631715 + 756631716.

It is an arithmetic number, because the mean of its divisors is an integer number (756631716).

Almost surely, 2^1513263431 is an apocalyptic number.

1513263431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513263431 is an equidigital number, since it uses as much as digits as its factorization.

1513263431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 1513263431 is about 38900.6867677166. The cubic root of 1513263431 is about 1148.0783106809.

Adding to 1513263431 its reverse (1343623151), we get a palindrome (2856886582).

The spelling of 1513263431 in words is "one billion, five hundred thirteen million, two hundred sixty-three thousand, four hundred thirty-one".