51431122101 has 16 divisors (see below), whose sum is σ = 72589239360. Its totient is φ = 32335201920.

The previous prime is 51431122081. The next prime is 51431122129. The reversal of 51431122101 is 10122113415.

It is not a de Polignac number, because 51431122101 - 2⁹ = 51431121589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51431122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6870240 + ... + 6877721.

It is an arithmetic number, because the mean of its divisors is an integer number (4536827460).

Almost surely, 2^51431122101 is an apocalyptic number.

It is an amenable number.

51431122101 is a deficient number, since it is larger than the sum of its proper divisors (21158117259).

51431122101 is a wasteful number, since it uses less digits than its factorization.

51431122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13748036.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 51431122101 its reverse (10122113415), we get a palindrome (61553235516).

The spelling of 51431122101 in words is "fifty-one billion, four hundred thirty-one million, one hundred twenty-two thousand, one hundred one".