20233213231 has 24 divisors (see below), whose sum is σ = 25739344080. Its totient is φ = 15727420800.

The previous prime is 20233213223. The next prime is 20233213243. The reversal of 20233213231 is 13231233202.

It is not a de Polignac number, because 20233213231 - 2³ = 20233213223 is a prime.

It is a super-2 number, since 2×20233213231² (a number of 21 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 (20233213201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174561 + ... + 266341.

It is an arithmetic number, because the mean of its divisors is an integer number (1072472670).

Almost surely, 2^20233213231 is an apocalyptic number.

20233213231 is a deficient number, since it is larger than the sum of its proper divisors (5506130849).

20233213231 is a wasteful number, since it uses less digits than its factorization.

20233213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92215 (or 92208 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20233213231 its reverse (13231233202), we get a palindrome (33464446433).

The spelling of 20233213231 in words is "twenty billion, two hundred thirty-three million, two hundred thirteen thousand, two hundred thirty-one".