1331013816 has 64 divisors (see below), whose sum is σ = 4033382400. Its totient is φ = 403336800.

The previous prime is 1331013797. The next prime is 1331013833. The reversal of 1331013816 is 6183101331.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1331013816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277720 + ... + 282471.

It is an arithmetic number, because the mean of its divisors is an integer number (63021600).

Almost surely, 2^1331013816 is an apocalyptic number.

It is an amenable number.

1331013816 is an abundant number, since it is smaller than the sum of its proper divisors (2702368584).

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

1331013816 is a wasteful number, since it uses less digits than its factorization.

1331013816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560217 (or 560207 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1331013816 is about 36483.0620425424. The cubic root of 1331013816 is about 1100.0038060474.

The spelling of 1331013816 in words is "one billion, three hundred thirty-one million, thirteen thousand, eight hundred sixteen".