131122321523 has 16 divisors (see below), whose sum is σ = 147537331200. Its totient is φ = 115922157120.

The previous prime is 131122321493. The next prime is 131122321537. The reversal of 131122321523 is 325123221131.

It is a cyclic number.

It is not a de Polignac number, because 131122321523 - 2²⁸ = 130853886067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131122321492 and 131122321501.

It is not an unprimeable number, because it can be changed into a prime (131122321423) 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, 3641243 + ... + 3677076.

It is an arithmetic number, because the mean of its divisors is an integer number (9221083200).

Almost surely, 2^131122321523 is an apocalyptic number.

131122321523 is a deficient number, since it is larger than the sum of its proper divisors (16415009677).

131122321523 is a wasteful number, since it uses less digits than its factorization.

131122321523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318402.

The product of its digits is 2160, while the sum is 26.

Adding to 131122321523 its reverse (325123221131), we get a palindrome (456245542654).

The spelling of 131122321523 in words is "one hundred thirty-one billion, one hundred twenty-two million, three hundred twenty-one thousand, five hundred twenty-three".