51431011223 has 2 divisors, whose sum is σ = 51431011224. Its totient is φ = 51431011222.

The previous prime is 51431011201. The next prime is 51431011253. The reversal of 51431011223 is 32211013415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51431011223 - 2¹² = 51431007127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51431011253) 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 as a sum of consecutive naturals, namely, 25715505611 + 25715505612.

It is an arithmetic number, because the mean of its divisors is an integer number (25715505612).

Almost surely, 2^51431011223 is an apocalyptic number.

51431011223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431011223 is an equidigital number, since it uses as much as digits as its factorization.

51431011223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 51431011223 its reverse (32211013415), we get a palindrome (83642024638).

The spelling of 51431011223 in words is "fifty-one billion, four hundred thirty-one million, eleven thousand, two hundred twenty-three".