2313131111020 has 24 divisors (see below), whose sum is σ = 4858956651024. Its totient is φ = 924989336256.

The previous prime is 2313131110949. The next prime is 2313131111101. The reversal of 2313131111020 is 201111313132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16372162 + ... + 16512841.

It is an arithmetic number, because the mean of its divisors is an integer number (202456527126).

Almost surely, 2^{2313131111020} is an apocalyptic number.

2313131111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2313131111020 is an abundant number, since it is smaller than the sum of its proper divisors (2545825540004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2313131111020 is a wasteful number, since it uses less digits than its factorization.

2313131111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32888529 (or 32888527 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2313131111020 its reverse (201111313132), we get a palindrome (2514242424152).

The spelling of 2313131111020 in words is "two trillion, three hundred thirteen billion, one hundred thirty-one million, one hundred eleven thousand, twenty".