131524322421 has 16 divisors (see below), whose sum is σ = 184631234240. Its totient is φ = 83051930880.

The previous prime is 131524322411. The next prime is 131524322437. The reversal of 131524322421 is 124223425131.

It is a happy number.

It is not a de Polignac number, because 131524322421 - 2¹⁸ = 131524060277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131524322411) 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, 77811 + ... + 518751.

It is an arithmetic number, because the mean of its divisors is an integer number (11539452140).

Almost surely, 2^131524322421 is an apocalyptic number.

It is an amenable number.

131524322421 is a deficient number, since it is larger than the sum of its proper divisors (53106911819).

131524322421 is a wasteful number, since it uses less digits than its factorization.

131524322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446196.

The product of its digits is 11520, while the sum is 30.

Adding to 131524322421 its reverse (124223425131), we get a palindrome (255747747552).

The spelling of 131524322421 in words is "one hundred thirty-one billion, five hundred twenty-four million, three hundred twenty-two thousand, four hundred twenty-one".