51431011232 has 24 divisors (see below), whose sum is σ = 106584004800. Its totient is φ = 24362057664.

The previous prime is 51431011223. The next prime is 51431011253. The reversal of 51431011232 is 23211013415.

It is a super-2 number, since 2×51431011232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51431011198 and 51431011207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42294632 + ... + 42295847.

It is an arithmetic number, because the mean of its divisors is an integer number (4441000200).

Almost surely, 2^51431011232 is an apocalyptic number.

It is an amenable number.

51431011232 is an abundant number, since it is smaller than the sum of its proper divisors (55152993568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51431011232 is a wasteful number, since it uses less digits than its factorization.

51431011232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84590508 (or 84590500 counting only the distinct ones).

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

Adding to 51431011232 its reverse (23211013415), we get a palindrome (74642024647).

The spelling of 51431011232 in words is "fifty-one billion, four hundred thirty-one million, eleven thousand, two hundred thirty-two".