51434204431 has 16 divisors (see below), whose sum is σ = 53630196480. Its totient is φ = 49287395520.

The previous prime is 51434204417. The next prime is 51434204473. The reversal of 51434204431 is 13440243415.

It is a cyclic number.

It is not a de Polignac number, because 51434204431 - 2⁷ = 51434204303 is a prime.

It is a super-2 number, since 2×51434204431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51434204393 and 51434204402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51434204231) 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, 926230 + ... + 980188.

It is an arithmetic number, because the mean of its divisors is an integer number (3351887280).

Almost surely, 2^51434204431 is an apocalyptic number.

51434204431 is a deficient number, since it is larger than the sum of its proper divisors (2195992049).

51434204431 is a wasteful number, since it uses less digits than its factorization.

51434204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54414.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 51434204431 its reverse (13440243415), we get a palindrome (64874447846).

The spelling of 51434204431 in words is "fifty-one billion, four hundred thirty-four million, two hundred four thousand, four hundred thirty-one".