20220233231 has 4 divisors (see below), whose sum is σ = 22058436264. Its totient is φ = 18382030200.

The previous prime is 20220233113. The next prime is 20220233233. The reversal of 20220233231 is 13233202202.

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 20220233231 - 2³⁰ = 19146491407 is a prime.

It is a super-2 number, since 2×20220233231² (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 (20220233233) 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, 919101500 + ... + 919101521.

It is an arithmetic number, because the mean of its divisors is an integer number (5514609066).

Almost surely, 2^20220233231 is an apocalyptic number.

20220233231 is a deficient number, since it is larger than the sum of its proper divisors (1838203033).

20220233231 is a wasteful number, since it uses less digits than its factorization.

20220233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838203032.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20220233231 its reverse (13233202202), we get a palindrome (33453435433).

The spelling of 20220233231 in words is "twenty billion, two hundred twenty million, two hundred thirty-three thousand, two hundred thirty-one".