12112231031 has 4 divisors (see below), whose sum is σ = 12529894200. Its totient is φ = 11694567864.

The previous prime is 12112231003. The next prime is 12112231073. The reversal of 12112231031 is 13013221121.

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 12112231031 - 2²² = 12108036727 is a prime.

It is a super-2 number, since 2×12112231031² (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 (12112231091) 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, 208831541 + ... + 208831598.

It is an arithmetic number, because the mean of its divisors is an integer number (3132473550).

Almost surely, 2^12112231031 is an apocalyptic number.

12112231031 is a deficient number, since it is larger than the sum of its proper divisors (417663169).

12112231031 is an equidigital number, since it uses as much as digits as its factorization.

12112231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417663168.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12112231031 its reverse (13013221121), we get a palindrome (25125452152).

The spelling of 12112231031 in words is "twelve billion, one hundred twelve million, two hundred thirty-one thousand, thirty-one".