131023324523 has 32 divisors (see below), whose sum is σ = 165158977536. Its totient is φ = 101172538368.

The previous prime is 131023324483. The next prime is 131023324543. The reversal of 131023324523 is 325423320131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131023324523 - 2¹⁶ = 131023258987 is a prime.

It is a super-2 number, since 2×131023324523² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131023324543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1466390 + ... + 1553172.

It is an arithmetic number, because the mean of its divisors is an integer number (5161218048).

Almost surely, 2^131023324523 is an apocalyptic number.

131023324523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131023324523 is a deficient number, since it is larger than the sum of its proper divisors (34135653013).

131023324523 is a wasteful number, since it uses less digits than its factorization.

131023324523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87203.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 131023324523 its reverse (325423320131), we get a palindrome (456446644654).

The spelling of 131023324523 in words is "one hundred thirty-one billion, twenty-three million, three hundred twenty-four thousand, five hundred twenty-three".