12113233031 has 4 divisors (see below), whose sum is σ = 12122418000. Its totient is φ = 12104048064.

The previous prime is 12113233007. The next prime is 12113233037. The reversal of 12113233031 is 13033231121.

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 12113233031 - 2²² = 12109038727 is a prime.

It is a super-2 number, since 2×12113233031² (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 = 12113232994 and 12113233012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113233037) 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, 4590506 + ... + 4593143.

It is an arithmetic number, because the mean of its divisors is an integer number (3030604500).

Almost surely, 2^12113233031 is an apocalyptic number.

12113233031 is a deficient number, since it is larger than the sum of its proper divisors (9184969).

12113233031 is an equidigital number, since it uses as much as digits as its factorization.

12113233031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184968.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12113233031 its reverse (13033231121), we get a palindrome (25146464152).

The spelling of 12113233031 in words is "twelve billion, one hundred thirteen million, two hundred thirty-three thousand, thirty-one".