12112311031 has 8 divisors (see below), whose sum is σ = 12178934784. Its totient is φ = 12045721080.

The previous prime is 12112311023. The next prime is 12112311049. The reversal of 12112311031 is 13011321121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112311031 - 2³ = 12112311023 is a prime.

It is a super-2 number, since 2×12112311031² (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 = 12112310996 and 12112311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112371031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107516 + ... + 1118398.

It is an arithmetic number, because the mean of its divisors is an integer number (1522366848).

Almost surely, 2^12112311031 is an apocalyptic number.

12112311031 is a deficient number, since it is larger than the sum of its proper divisors (66623753).

12112311031 is a wasteful number, since it uses less digits than its factorization.

12112311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16901.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12112311031 its reverse (13011321121), we get a palindrome (25123632152).

The spelling of 12112311031 in words is "twelve billion, one hundred twelve million, three hundred eleven thousand, thirty-one".