51310422431 has 16 divisors (see below), whose sum is σ = 57201112800. Its totient is φ = 45740049408.

The previous prime is 51310422407. The next prime is 51310422433. The reversal of 51310422431 is 13422401315.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51310422431 - 2¹⁸ = 51310160287 is a prime.

It is a super-2 number, since 2×51310422431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51310422431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51310422433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1635965 + ... + 1667033.

It is an arithmetic number, because the mean of its divisors is an integer number (3575069550).

Almost surely, 2^51310422431 is an apocalyptic number.

51310422431 is a deficient number, since it is larger than the sum of its proper divisors (5890690369).

51310422431 is a wasteful number, since it uses less digits than its factorization.

51310422431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36218.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 51310422431 its reverse (13422401315), we get a palindrome (64732823746).

It can be divided in two parts, 513104 and 22431, that added together give a palindrome (535535).

The spelling of 51310422431 in words is "fifty-one billion, three hundred ten million, four hundred twenty-two thousand, four hundred thirty-one".