20231333131 has 4 divisors (see below), whose sum is σ = 20264123592. Its totient is φ = 20198542672.

The previous prime is 20231333051. The next prime is 20231333137. The reversal of 20231333131 is 13133313202.

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 20231333131 - 2⁹ = 20231332619 is a prime.

It is a super-2 number, since 2×20231333131² (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 (20231333137) 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, 16394305 + ... + 16395538.

It is an arithmetic number, because the mean of its divisors is an integer number (5066030898).

Almost surely, 2^20231333131 is an apocalyptic number.

20231333131 is a deficient number, since it is larger than the sum of its proper divisors (32790461).

20231333131 is an equidigital number, since it uses as much as digits as its factorization.

20231333131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32790460.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20231333131 its reverse (13133313202), we get a palindrome (33364646333).

The spelling of 20231333131 in words is "twenty billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred thirty-one".