51021232323 has 16 divisors (see below), whose sum is σ = 71614147200. Its totient is φ = 32221506240.

The previous prime is 51021232313. The next prime is 51021232351. The reversal of 51021232323 is 32323212015.

It is a happy number.

It is not a de Polignac number, because 51021232323 - 2¹² = 51021228227 is a prime.

It is a super-2 number, since 2×51021232323² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51021232293 and 51021232302.

It is not an unprimeable number, because it can be changed into a prime (51021232313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1008783 + ... + 1058151.

It is an arithmetic number, because the mean of its divisors is an integer number (4475884200).

Almost surely, 2^51021232323 is an apocalyptic number.

51021232323 is a deficient number, since it is larger than the sum of its proper divisors (20592914877).

51021232323 is a wasteful number, since it uses less digits than its factorization.

51021232323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67522.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 51021232323 its reverse (32323212015), we get a palindrome (83344444338).

The spelling of 51021232323 in words is "fifty-one billion, twenty-one million, two hundred thirty-two thousand, three hundred twenty-three".