1307056813 has 4 divisors (see below), whose sum is σ = 1349219968. Its totient is φ = 1264893660.

The previous prime is 1307056801. The next prime is 1307056843. The reversal of 1307056813 is 3186507031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3186507031 = 17609 ⋅180959.

It is a cyclic number.

It is not a de Polignac number, because 1307056813 - 2²⁵ = 1273502381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307056843) 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, 21081531 + ... + 21081592.

It is an arithmetic number, because the mean of its divisors is an integer number (337304992).

Almost surely, 2^1307056813 is an apocalyptic number.

It is an amenable number.

1307056813 is a deficient number, since it is larger than the sum of its proper divisors (42163155).

1307056813 is an equidigital number, since it uses as much as digits as its factorization.

1307056813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42163154.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1307056813 is about 36153.2406984492. The cubic root of 1307056813 is about 1093.3641296001.

The spelling of 1307056813 in words is "one billion, three hundred seven million, fifty-six thousand, eight hundred thirteen".