2131031501125 has 16 divisors (see below), whose sum is σ = 2669341109760. Its totient is φ = 1698534306000.

The previous prime is 2131031501113. The next prime is 2131031501161. The reversal of 2131031501125 is 5211051301312.

It is not a de Polignac number, because 2131031501125 - 2²⁷ = 2130897283397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 2131031501125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31420465 + ... + 31488214.

It is an arithmetic number, because the mean of its divisors is an integer number (166833819360).

Almost surely, 2^{2131031501125} is an apocalyptic number.

2131031501125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131031501125 is a deficient number, since it is larger than the sum of its proper divisors (538309608635).

2131031501125 is an equidigital number, since it uses as much as digits as its factorization.

2131031501125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62908965 (or 62908955 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 2131031501125 its reverse (5211051301312), we get a palindrome (7342082802437).

The spelling of 2131031501125 in words is "two trillion, one hundred thirty-one billion, thirty-one million, five hundred one thousand, one hundred twenty-five".