51431051323 has 8 divisors (see below), whose sum is σ = 52676399600. Its totient is φ = 50187943008.

The previous prime is 51431051297. The next prime is 51431051327. The reversal of 51431051323 is 32315013415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51431051323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51431051291 and 51431051300.

It is not an unprimeable number, because it can be changed into a prime (51431051327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513468 + ... + 605401.

It is an arithmetic number, because the mean of its divisors is an integer number (6584549950).

Almost surely, 2^51431051323 is an apocalyptic number.

51431051323 is a deficient number, since it is larger than the sum of its proper divisors (1245348277).

51431051323 is a wasteful number, since it uses less digits than its factorization.

51431051323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119981.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 51431051323 its reverse (32315013415), we get a palindrome (83746064738).

The spelling of 51431051323 in words is "fifty-one billion, four hundred thirty-one million, fifty-one thousand, three hundred twenty-three".