23120032031 has 4 divisors (see below), whose sum is σ = 23136167472. Its totient is φ = 23103896592.

The previous prime is 23120032027. The next prime is 23120032057. The reversal of 23120032031 is 13023002132.

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 23120032031 - 2² = 23120032027 is a prime.

It is a super-2 number, since 2×23120032031² (a number of 22 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 (23120032081) 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, 8065571 + ... + 8068436.

It is an arithmetic number, because the mean of its divisors is an integer number (5784041868).

Almost surely, 2^23120032031 is an apocalyptic number.

23120032031 is a deficient number, since it is larger than the sum of its proper divisors (16135441).

23120032031 is a wasteful number, since it uses less digits than its factorization.

23120032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16135440.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23120032031 its reverse (13023002132), we get a palindrome (36143034163).

The spelling of 23120032031 in words is "twenty-three billion, one hundred twenty million, thirty-two thousand, thirty-one".