2313131100020 has 48 divisors (see below), whose sum is σ = 5411622378960. Its totient is φ = 824628166656.

The previous prime is 2313131100011. The next prime is 2313131100061. The reversal of 2313131100020 is 200011313132.

It can be written as a sum of positive squares in 8 ways, for example, as 753444832144 + 1559686267876 = 868012^2 + 1248874^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153383117 + ... + 153398196.

It is an arithmetic number, because the mean of its divisors is an integer number (112742132895).

Almost surely, 2^{2313131100020} is an apocalyptic number.

2313131100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2313131100020 is an abundant number, since it is smaller than the sum of its proper divisors (3098491278940).

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

2313131100020 is a wasteful number, since it uses less digits than its factorization.

2313131100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306781364 (or 306781362 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 2313131100020 its reverse (200011313132), we get a palindrome (2513142413152).

The spelling of 2313131100020 in words is "two trillion, three hundred thirteen billion, one hundred thirty-one million, one hundred thousand, twenty".