23120020331 has 4 divisors (see below), whose sum is σ = 23126113152. Its totient is φ = 23113927512.

The previous prime is 23120020321. The next prime is 23120020333. The reversal of 23120020331 is 13302002132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23120020331 is a prime.

It is a super-2 number, since 2×23120020331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23120020333) 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, 3040715 + ... + 3048308.

It is an arithmetic number, because the mean of its divisors is an integer number (5781528288).

Almost surely, 2^23120020331 is an apocalyptic number.

23120020331 is a deficient number, since it is larger than the sum of its proper divisors (6092821).

23120020331 is an equidigital number, since it uses as much as digits as its factorization.

23120020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6092820.

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

Adding to 23120020331 its reverse (13302002132), we get a palindrome (36422022463).

The spelling of 23120020331 in words is "twenty-three billion, one hundred twenty million, twenty thousand, three hundred thirty-one".