3133813 has 4 divisors (see below), whose sum is σ = 3142720. Its totient is φ = 3124908.

The previous prime is 3133811. The next prime is 3133843. The reversal of 3133813 is 3183313.

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: 3183313 = 7 ⋅454759.

It is a cyclic number.

It is not a de Polignac number, because 3133813 - 2¹ = 3133811 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 (3133811) 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, 3903 + ... + 4636.

It is an arithmetic number, because the mean of its divisors is an integer number (785680).

Almost surely, 2^3133813 is an apocalyptic number.

It is an amenable number.

3133813 is a deficient number, since it is larger than the sum of its proper divisors (8907).

3133813 is an equidigital number, since it uses as much as digits as its factorization.

3133813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906.

The product of its digits is 648, while the sum is 22.

The square root of 3133813 is about 1770.2578908170. The cubic root of 3133813 is about 146.3381945460.

The spelling of 3133813 in words is "three million, one hundred thirty-three thousand, eight hundred thirteen".