51283631231 has 48 divisors (see below), whose sum is σ = 63533859840. Its totient is φ = 41187706560.

The previous prime is 51283631221. The next prime is 51283631237. The reversal of 51283631231 is 13213638215.

It is not a de Polignac number, because 51283631231 - 2¹⁰ = 51283630207 is a prime.

It is a super-2 number, since 2×51283631231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51283631191 and 51283631200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51283631237) 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 47 ways as a sum of consecutive naturals, for example, 11661125 + ... + 11665521.

It is an arithmetic number, because the mean of its divisors is an integer number (1323622080).

Almost surely, 2^51283631231 is an apocalyptic number.

51283631231 is a deficient number, since it is larger than the sum of its proper divisors (12250228609).

51283631231 is a wasteful number, since it uses less digits than its factorization.

51283631231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 4637 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The spelling of 51283631231 in words is "fifty-one billion, two hundred eighty-three million, six hundred thirty-one thousand, two hundred thirty-one".