12322031431 has 4 divisors (see below), whose sum is σ = 12857771952. Its totient is φ = 11786290912.

The previous prime is 12322031387. The next prime is 12322031467. The reversal of 12322031431 is 13413022321.

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

It is a cyclic number.

It is not a de Polignac number, because 12322031431 - 2²⁵ = 12288476999 is a prime.

It is a super-2 number, since 2×12322031431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322011431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267870226 + ... + 267870271.

It is an arithmetic number, because the mean of its divisors is an integer number (3214442988).

Almost surely, 2^12322031431 is an apocalyptic number.

12322031431 is a deficient number, since it is larger than the sum of its proper divisors (535740521).

12322031431 is an equidigital number, since it uses as much as digits as its factorization.

12322031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535740520.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12322031431 its reverse (13413022321), we get a palindrome (25735053752).

The spelling of 12322031431 in words is "twelve billion, three hundred twenty-two million, thirty-one thousand, four hundred thirty-one".