23021440331 has 2 divisors, whose sum is σ = 23021440332. Its totient is φ = 23021440330.

The previous prime is 23021440237. The next prime is 23021440363. The reversal of 23021440331 is 13304412032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23021440331 - 2¹⁴ = 23021423947 is a prime.

It is a super-2 number, since 2×23021440331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23021440297 and 23021440306.

It is not a weakly prime, because it can be changed into another prime (23021440391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510720165 + 11510720166.

It is an arithmetic number, because the mean of its divisors is an integer number (11510720166).

Almost surely, 2^23021440331 is an apocalyptic number.

23021440331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021440331 is an equidigital number, since it uses as much as digits as its factorization.

23021440331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 23021440331 its reverse (13304412032), we get a palindrome (36325852363).

The spelling of 23021440331 in words is "twenty-three billion, twenty-one million, four hundred forty thousand, three hundred thirty-one".