131430032424021 has 24 divisors (see below), whose sum is σ = 188948138823360. Its totient is φ = 81106892338560.

The previous prime is 131430032423999. The next prime is 131430032424029. The reversal of 131430032424021 is 120424230034131.

It is a de Polignac number, because none of the positive numbers 2^k-131430032424021 is a prime.

It is a super-2 number, since 2×131430032424021² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131430032424021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131430032424029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990975876 + ... + 991108493.

It is an arithmetic number, because the mean of its divisors is an integer number (7872839117640).

Almost surely, 2^{131430032424021} is an apocalyptic number.

It is an amenable number.

131430032424021 is a deficient number, since it is larger than the sum of its proper divisors (57518106399339).

131430032424021 is a wasteful number, since it uses less digits than its factorization.

131430032424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982084457 (or 1982084426 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131430032424021 its reverse (120424230034131), we get a palindrome (251854262458152).

The spelling of 131430032424021 in words is "one hundred thirty-one trillion, four hundred thirty billion, thirty-two million, four hundred twenty-four thousand, twenty-one".