3130813 has 4 divisors (see below), whose sum is σ = 3578080. Its totient is φ = 2683548.

The previous prime is 3130789. The next prime is 3130817. The reversal of 3130813 is 3180313.

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.

It is not a de Polignac number, because 3130813 - 2²¹ = 1033661 is a prime.

It is a super-3 number, since 3×3130813³ = 92064593538408833391, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130817) 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, 223623 + ... + 223636.

It is an arithmetic number, because the mean of its divisors is an integer number (894520).

Almost surely, 2^3130813 is an apocalyptic number.

It is an amenable number.

3130813 is a deficient number, since it is larger than the sum of its proper divisors (447267).

3130813 is an equidigital number, since it uses as much as digits as its factorization.

3130813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447266.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3130813 is about 1769.4103537620. The cubic root of 3130813 is about 146.2914831066.

It can be divided in two parts, 3 and 130813, that added together give a triangular number (130816 = T₅₁₁).

The spelling of 3130813 in words is "three million, one hundred thirty thousand, eight hundred thirteen".