2131321310 has 64 divisors (see below), whose sum is σ = 4010549760. Its totient is φ = 814988160.

The previous prime is 2131321279. The next prime is 2131321321. The reversal of 2131321310 is 131231312.

It is a super-2 number, since 2×2131321310² = 9085061052920232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3476564 + ... + 3477176.

It is an arithmetic number, because the mean of its divisors is an integer number (62664840).

Almost surely, 2^2131321310 is an apocalyptic number.

2131321310 is a deficient number, since it is larger than the sum of its proper divisors (1879228450).

2131321310 is a wasteful number, since it uses less digits than its factorization.

2131321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833.

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

The square root of 2131321310 is about 46166.2356056891. The cubic root of 2131321310 is about 1286.9143465163.

Adding to 2131321310 its reverse (131231312), we get a palindrome (2262552622).

The spelling of 2131321310 in words is "two billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred ten".