51031431125 has 16 divisors (see below), whose sum is σ = 66456239616. Its totient is φ = 39050136400.

The previous prime is 51031431089. The next prime is 51031431127. The reversal of 51031431125 is 52113413015.

It is not a de Polignac number, because 51031431125 - 2¹⁰ = 51031430101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51031431094 and 51031431103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031431127) 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, 8872157 + ... + 8877906.

It is an arithmetic number, because the mean of its divisors is an integer number (4153514976).

Almost surely, 2^51031431125 is an apocalyptic number.

It is an amenable number.

51031431125 is a deficient number, since it is larger than the sum of its proper divisors (15424808491).

51031431125 is a wasteful number, since it uses less digits than its factorization.

51031431125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17750101 (or 17750091 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 51031431125 in words is "fifty-one billion, thirty-one million, four hundred thirty-one thousand, one hundred twenty-five".