331502053421 has 24 divisors (see below), whose sum is σ = 421028145216. Its totient is φ = 258100523520.

The previous prime is 331502053349. The next prime is 331502053433. The reversal of 331502053421 is 124350205133.

It is a happy number.

It is not a de Polignac number, because 331502053421 - 2³⁰ = 330428311597 is a prime.

It is a super-2 number, since 2×331502053421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331502053451) 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, 403280 + ... + 908646.

It is an arithmetic number, because the mean of its divisors is an integer number (17542839384).

Almost surely, 2^331502053421 is an apocalyptic number.

It is an amenable number.

331502053421 is a deficient number, since it is larger than the sum of its proper divisors (89526091795).

331502053421 is a wasteful number, since it uses less digits than its factorization.

331502053421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506609 (or 506602 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 331502053421 its reverse (124350205133), we get a palindrome (455852258554).

The spelling of 331502053421 in words is "three hundred thirty-one billion, five hundred two million, fifty-three thousand, four hundred twenty-one".