51233432131 has 8 divisors (see below), whose sum is σ = 58553918720. Its totient is φ = 43913301768.

The previous prime is 51233432123. The next prime is 51233432137. The reversal of 51233432131 is 13123433215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51233432131 - 2³ = 51233432123 is a prime.

It is a super-2 number, since 2×51233432131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51233432131.

It is not an unprimeable number, because it can be changed into a prime (51233432137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393400 + ... + 507178.

It is an arithmetic number, because the mean of its divisors is an integer number (7319239840).

Almost surely, 2^51233432131 is an apocalyptic number.

51233432131 is a deficient number, since it is larger than the sum of its proper divisors (7320486589).

51233432131 is a wasteful number, since it uses less digits than its factorization.

51233432131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178113.

The product of its digits is 6480, while the sum is 28.

Adding to 51233432131 its reverse (13123433215), we get a palindrome (64356865346).

The spelling of 51233432131 in words is "fifty-one billion, two hundred thirty-three million, four hundred thirty-two thousand, one hundred thirty-one".