20120023331 has 4 divisors (see below), whose sum is σ = 20122833912. Its totient is φ = 20117212752.

The previous prime is 20120023271. The next prime is 20120023369. The reversal of 20120023331 is 13332002102.

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 20120023331 - 2²⁶ = 20052914467 is a prime.

It is a super-2 number, since 2×20120023331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120023831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394525 + ... + 1408878.

It is an arithmetic number, because the mean of its divisors is an integer number (5030708478).

Almost surely, 2^20120023331 is an apocalyptic number.

20120023331 is a deficient number, since it is larger than the sum of its proper divisors (2810581).

20120023331 is an equidigital number, since it uses as much as digits as its factorization.

20120023331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810580.

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

Adding to 20120023331 its reverse (13332002102), we get a palindrome (33452025433).

The spelling of 20120023331 in words is "twenty billion, one hundred twenty million, twenty-three thousand, three hundred thirty-one".