3131333113 has 4 divisors (see below), whose sum is σ = 3145127760. Its totient is φ = 3117538468.

The previous prime is 3131333111. The next prime is 3131333119. The reversal of 3131333113 is 3113331313.

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 a cyclic number.

It is not a de Polignac number, because 3131333113 - 2¹ = 3131333111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131333111) 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, 6896983 + ... + 6897436.

It is an arithmetic number, because the mean of its divisors is an integer number (786281940).

Almost surely, 2^3131333113 is an apocalyptic number.

It is an amenable number.

3131333113 is a deficient number, since it is larger than the sum of its proper divisors (13794647).

3131333113 is a wasteful number, since it uses less digits than its factorization.

3131333113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794646.

The product of its digits is 729, while the sum is 22.

The square root of 3131333113 is about 55958.3158520697. The cubic root of 3131333113 is about 1462.9958365316.

Adding to 3131333113 its reverse (3113331313), we get a palindrome (6244664426).

The spelling of 3131333113 in words is "three billion, one hundred thirty-one million, three hundred thirty-three thousand, one hundred thirteen".