2531123142131 has 16 divisors (see below), whose sum is σ = 2553034049280. Its totient is φ = 2509309498080.

The previous prime is 2531123142109. The next prime is 2531123142133. The reversal of 2531123142131 is 1312413211352.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531123142131 is a prime.

It is a super-2 number, since 2×2531123142131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2531123142094 and 2531123142103.

It is not an unprimeable number, because it can be changed into a prime (2531123142133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246717080 + ... + 246727338.

It is an arithmetic number, because the mean of its divisors is an integer number (159564628080).

Almost surely, 2^{2531123142131} is an apocalyptic number.

2531123142131 is a deficient number, since it is larger than the sum of its proper divisors (21910907149).

2531123142131 is a wasteful number, since it uses less digits than its factorization.

2531123142131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14794.

The product of its digits is 4320, while the sum is 29.

Adding to 2531123142131 its reverse (1312413211352), we get a palindrome (3843536353483).

The spelling of 2531123142131 in words is "two trillion, five hundred thirty-one billion, one hundred twenty-three million, one hundred forty-two thousand, one hundred thirty-one".