20233132331 has 4 divisors (see below), whose sum is σ = 20270122152. Its totient is φ = 20196142512.

The previous prime is 20233132313. The next prime is 20233132349. The reversal of 20233132331 is 13323133202.

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

It is an interprime number because it is at equal distance from previous prime (20233132313) and next prime (20233132349).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233132331 is a prime.

It is a super-2 number, since 2×20233132331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20233132297 and 20233132306.

It is not an unprimeable number, because it can be changed into a prime (20233132531) 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, 18494090 + ... + 18495183.

It is an arithmetic number, because the mean of its divisors is an integer number (5067530538).

Almost surely, 2^20233132331 is an apocalyptic number.

20233132331 is a deficient number, since it is larger than the sum of its proper divisors (36989821).

20233132331 is an equidigital number, since it uses as much as digits as its factorization.

20233132331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36989820.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20233132331 its reverse (13323133202), we get a palindrome (33556265533).

The spelling of 20233132331 in words is "twenty billion, two hundred thirty-three million, one hundred thirty-two thousand, three hundred thirty-one".