3131223333313 has 4 divisors (see below), whose sum is σ = 3131229328128. Its totient is φ = 3131217338500.

The previous prime is 3131223333257. The next prime is 3131223333323. The reversal of 3131223333313 is 3133333221313.

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 3131223333313 - 2¹³ = 3131223325121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131223333323) 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, 2130313 + ... + 3286438.

It is an arithmetic number, because the mean of its divisors is an integer number (782807332032).

Almost surely, 2^{3131223333313} is an apocalyptic number.

It is an amenable number.

3131223333313 is a deficient number, since it is larger than the sum of its proper divisors (5994815).

3131223333313 is an equidigital number, since it uses as much as digits as its factorization.

3131223333313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994814.

The product of its digits is 26244, while the sum is 31.

Adding to 3131223333313 its reverse (3133333221313), we get a palindrome (6264556554626).

The spelling of 3131223333313 in words is "three trillion, one hundred thirty-one billion, two hundred twenty-three million, three hundred thirty-three thousand, three hundred thirteen".