1304087013 has 32 divisors (see below), whose sum is σ = 1998873600. Its totient is φ = 839419200.

The previous prime is 1304086991. The next prime is 1304087027. The reversal of 1304087013 is 3107804031.

It is not a de Polignac number, because 1304087013 - 2⁵ = 1304086981 is a prime.

It is a super-3 number, since 3×1304087013³ (a number of 28 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304087413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424503 + ... + 427563.

It is an arithmetic number, because the mean of its divisors is an integer number (62464800).

Almost surely, 2^1304087013 is an apocalyptic number.

It is an amenable number.

1304087013 is a deficient number, since it is larger than the sum of its proper divisors (694786587).

1304087013 is a wasteful number, since it uses less digits than its factorization.

1304087013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 3604 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1304087013 is about 36112.1449515257. The cubic root of 1304087013 is about 1092.5354139892.

The spelling of 1304087013 in words is "one billion, three hundred four million, eighty-seven thousand, thirteen".