12431323022 has 4 divisors (see below), whose sum is σ = 18646984536. Its totient is φ = 6215661510.

The previous prime is 12431323007. The next prime is 12431323027. The reversal of 12431323022 is 22032313421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431323027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3107830754 + ... + 3107830757.

It is an arithmetic number, because the mean of its divisors is an integer number (4661746134).

Almost surely, 2^12431323022 is an apocalyptic number.

12431323022 is a deficient number, since it is larger than the sum of its proper divisors (6215661514).

12431323022 is an equidigital number, since it uses as much as digits as its factorization.

12431323022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6215661513.

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

Adding to 12431323022 its reverse (22032313421), we get a palindrome (34463636443).

The spelling of 12431323022 in words is "twelve billion, four hundred thirty-one million, three hundred twenty-three thousand, twenty-two".