23220112031 has 4 divisors (see below), whose sum is σ = 24586000992. Its totient is φ = 21854223072.

The previous prime is 23220112009. The next prime is 23220112037. The reversal of 23220112031 is 13021102232.

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 23220112031 - 2²² = 23215917727 is a prime.

It is a super-2 number, since 2×23220112031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1365888943 = 23220112031 / (2 + 3 + 2 + 2 + 0 + 1 + 1 + 2 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220112037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682944455 + ... + 682944488.

It is an arithmetic number, because the mean of its divisors is an integer number (6146500248).

Almost surely, 2^23220112031 is an apocalyptic number.

23220112031 is a deficient number, since it is larger than the sum of its proper divisors (1365888961).

23220112031 is a wasteful number, since it uses less digits than its factorization.

23220112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365888960.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23220112031 its reverse (13021102232), we get a palindrome (36241214263).

The spelling of 23220112031 in words is "twenty-three billion, two hundred twenty million, one hundred twelve thousand, thirty-one".