51214323511431 has 12 divisors (see below), whose sum is σ = 75018164017680. Its totient is φ = 33661996673760.

The previous prime is 51214323511363. The next prime is 51214323511433. The reversal of 51214323511431 is 13411532341215.

51214323511431 is a `hidden beast` number, since 5 + 1 + 214 + 3 + 2 + 3 + 5 + 1 + 1 + 431 = 666.

It is not a de Polignac number, because 51214323511431 - 2⁷ = 51214323511303 is a prime.

It is a super-2 number, since 2×51214323511431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51214323511433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40073804926 + ... + 40073806203.

It is an arithmetic number, because the mean of its divisors is an integer number (6251513668140).

Almost surely, 2^{51214323511431} is an apocalyptic number.

51214323511431 is a deficient number, since it is larger than the sum of its proper divisors (23803840506249).

51214323511431 is a wasteful number, since it uses less digits than its factorization.

51214323511431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80147611206 (or 80147611203 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 51214323511431 its reverse (13411532341215), we get a palindrome (64625855852646).

The spelling of 51214323511431 in words is "fifty-one trillion, two hundred fourteen billion, three hundred twenty-three million, five hundred eleven thousand, four hundred thirty-one".