53121204231 has 16 divisors (see below), whose sum is σ = 71145220320. Its totient is φ = 35256012800.

The previous prime is 53121204203. The next prime is 53121204277. The reversal of 53121204231 is 13240212135.

It is a cyclic number.

It is not a de Polignac number, because 53121204231 - 2⁶ = 53121204167 is a prime.

It is a super-2 number, since 2×53121204231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121204281) 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, 568951 + ... + 655703.

It is an arithmetic number, because the mean of its divisors is an integer number (4446576270).

Almost surely, 2^53121204231 is an apocalyptic number.

53121204231 is a deficient number, since it is larger than the sum of its proper divisors (18024016089).

53121204231 is a wasteful number, since it uses less digits than its factorization.

53121204231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87666.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 53121204231 its reverse (13240212135), we get a palindrome (66361416366).

The spelling of 53121204231 in words is "fifty-three billion, one hundred twenty-one million, two hundred four thousand, two hundred thirty-one".