12213432031 has 4 divisors (see below), whose sum is σ = 12237713712. Its totient is φ = 12189150352.

The previous prime is 12213432013. The next prime is 12213432061. The reversal of 12213432031 is 13023431221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13023431221 = 179 ⋅72756599.

It is a cyclic number.

It is not a de Polignac number, because 12213432031 - 2²³ = 12205043423 is a prime.

It is a super-2 number, since 2×12213432031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12213431993 and 12213432011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213432001) 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, 12140086 + ... + 12141091.

It is an arithmetic number, because the mean of its divisors is an integer number (3059428428).

Almost surely, 2^12213432031 is an apocalyptic number.

12213432031 is a deficient number, since it is larger than the sum of its proper divisors (24281681).

12213432031 is an equidigital number, since it uses as much as digits as its factorization.

12213432031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24281680.

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

Adding to 12213432031 its reverse (13023431221), we get a palindrome (25236863252).

The spelling of 12213432031 in words is "twelve billion, two hundred thirteen million, four hundred thirty-two thousand, thirty-one".