1316315640 has 64 divisors (see below), whose sum is σ = 3953318400. Its totient is φ = 350628992.

The previous prime is 1316315639. The next prime is 1316315659. The reversal of 1316315640 is 465136131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1316315598 and 1316315607.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 112381 + ... + 123539.

It is an arithmetic number, because the mean of its divisors is an integer number (61770600).

Almost surely, 2^1316315640 is an apocalyptic number.

1316315640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316315640 is an abundant number, since it is smaller than the sum of its proper divisors (2637002760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316315640 is a wasteful number, since it uses less digits than its factorization.

1316315640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156 (or 12152 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1316315640 is about 36281.0644827298. The cubic root of 1316315640 is about 1095.9397532905.

The spelling of 1316315640 in words is "one billion, three hundred sixteen million, three hundred fifteen thousand, six hundred forty".