1313463531 has 4 divisors (see below), whose sum is σ = 1751284712. Its totient is φ = 875642352.

The previous prime is 1313463527. The next prime is 1313463589. The reversal of 1313463531 is 1353643131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1313463531 - 2² = 1313463527 is a prime.

It is a super-2 number, since 2×1313463531² = 3450372894533975922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313463631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218910586 + ... + 218910591.

It is an arithmetic number, because the mean of its divisors is an integer number (437821178).

Almost surely, 2^1313463531 is an apocalyptic number.

1313463531 is a deficient number, since it is larger than the sum of its proper divisors (437821181).

1313463531 is an equidigital number, since it uses as much as digits as its factorization.

1313463531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437821180.

The product of its digits is 9720, while the sum is 30.

The square root of 1313463531 is about 36241.7374169617. The cubic root of 1313463531 is about 1095.1476434015.

The spelling of 1313463531 in words is "one billion, three hundred thirteen million, four hundred sixty-three thousand, five hundred thirty-one".