51431011311 has 32 divisors (see below), whose sum is σ = 72350171136. Its totient is φ = 32455836000.

The previous prime is 51431011283. The next prime is 51431011361. The reversal of 51431011311 is 11311013415.

It is not a de Polignac number, because 51431011311 - 2⁵ = 51431011279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51431011361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 807916 + ... + 869246.

It is an arithmetic number, because the mean of its divisors is an integer number (2260942848).

Almost surely, 2^51431011311 is an apocalyptic number.

51431011311 is a deficient number, since it is larger than the sum of its proper divisors (20919159825).

51431011311 is a wasteful number, since it uses less digits than its factorization.

51431011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61563.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 51431011311 its reverse (11311013415), we get a palindrome (62742024726).

The spelling of 51431011311 in words is "fifty-one billion, four hundred thirty-one million, eleven thousand, three hundred eleven".