1315006631 has 4 divisors (see below), whose sum is σ = 1317195264. Its totient is φ = 1312818000.

The previous prime is 1315006579. The next prime is 1315006643. The reversal of 1315006631 is 1366005131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315006631 is a prime.

It is a super-2 number, since 2×1315006631² = 3458484879147940322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315006631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315006681) 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, 1093415 + ... + 1094616.

It is an arithmetic number, because the mean of its divisors is an integer number (329298816).

Almost surely, 2^1315006631 is an apocalyptic number.

1315006631 is a deficient number, since it is larger than the sum of its proper divisors (2188633).

1315006631 is an equidigital number, since it uses as much as digits as its factorization.

1315006631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188632.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1315006631 is about 36263.0201582825. The cubic root of 1315006631 is about 1095.5763473404.

The spelling of 1315006631 in words is "one billion, three hundred fifteen million, six thousand, six hundred thirty-one".