131312021424 has 160 divisors (see below), whose sum is σ = 353756566464. Its totient is φ = 41936486400.

The previous prime is 131312021413. The next prime is 131312021441. The reversal of 131312021424 is 424120213131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 131312021394 and 131312021403.

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, 34617672 + ... + 34621464.

Almost surely, 2^131312021424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131312021424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176878283232).

131312021424 is an abundant number, since it is smaller than the sum of its proper divisors (222444545040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131312021424 is a wasteful number, since it uses less digits than its factorization.

131312021424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131312021424 its reverse (424120213131), we get a palindrome (555432234555).

The spelling of 131312021424 in words is "one hundred thirty-one billion, three hundred twelve million, twenty-one thousand, four hundred twenty-four".