1307831813 has 8 divisors (see below), whose sum is σ = 1362408960. Its totient is φ = 1254029040.

The previous prime is 1307831801. The next prime is 1307831839. The reversal of 1307831813 is 3181387031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1307831813 - 2⁴ = 1307831797 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 (1307831843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190145 + ... + 196902.

It is an arithmetic number, because the mean of its divisors is an integer number (170301120).

Almost surely, 2^1307831813 is an apocalyptic number.

It is an amenable number.

1307831813 is a deficient number, since it is larger than the sum of its proper divisors (54577147).

1307831813 is a wasteful number, since it uses less digits than its factorization.

1307831813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387187.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1307831813 is about 36163.9573747122. The cubic root of 1307831813 is about 1093.5801849317.

The spelling of 1307831813 in words is "one billion, three hundred seven million, eight hundred thirty-one thousand, eight hundred thirteen".