23223021431 has 2 divisors, whose sum is σ = 23223021432. Its totient is φ = 23223021430.

The previous prime is 23223021401. The next prime is 23223021457. The reversal of 23223021431 is 13412032232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23223021431 - 2¹⁰ = 23223020407 is a prime.

It is a super-2 number, since 2×23223021431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23223021397 and 23223021406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23223021401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11611510715 + 11611510716.

It is an arithmetic number, because the mean of its divisors is an integer number (11611510716).

Almost surely, 2^23223021431 is an apocalyptic number.

23223021431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23223021431 is an equidigital number, since it uses as much as digits as its factorization.

23223021431 is an evil number, because the sum of its binary digits is even.

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

Adding to 23223021431 its reverse (13412032232), we get a palindrome (36635053663).

The spelling of 23223021431 in words is "twenty-three billion, two hundred twenty-three million, twenty-one thousand, four hundred thirty-one".