51330123231 has 16 divisors (see below), whose sum is σ = 68666120448. Its totient is φ = 34107163200.

The previous prime is 51330123209. The next prime is 51330123283. The reversal of 51330123231 is 13232103315.

It is not a de Polignac number, because 51330123231 - 2¹⁴ = 51330106847 is a prime.

It is a super-2 number, since 2×51330123231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330123331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6471390 + ... + 6479316.

It is an arithmetic number, because the mean of its divisors is an integer number (4291632528).

Almost surely, 2^51330123231 is an apocalyptic number.

51330123231 is a deficient number, since it is larger than the sum of its proper divisors (17335997217).

51330123231 is a wasteful number, since it uses less digits than its factorization.

51330123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782.

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 51330123231 its reverse (13232103315), we get a palindrome (64562226546).

The spelling of 51330123231 in words is "fifty-one billion, three hundred thirty million, one hundred twenty-three thousand, two hundred thirty-one".