2312131203313 has 4 divisors (see below), whose sum is σ = 2312717001840. Its totient is φ = 2311545404788.

The previous prime is 2312131203299. The next prime is 2312131203323. The reversal of 2312131203313 is 3133021312132.

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 2312131203313 - 2⁵ = 2312131203281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312131203323) 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, 292893343 + ... + 292901236.

It is an arithmetic number, because the mean of its divisors is an integer number (578179250460).

Almost surely, 2^{2312131203313} is an apocalyptic number.

It is an amenable number.

2312131203313 is a deficient number, since it is larger than the sum of its proper divisors (585798527).

2312131203313 is an equidigital number, since it uses as much as digits as its factorization.

2312131203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585798526.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2312131203313 its reverse (3133021312132), we get a palindrome (5445152515445).

The spelling of 2312131203313 in words is "two trillion, three hundred twelve billion, one hundred thirty-one million, two hundred three thousand, three hundred thirteen".