20221231231 has 8 divisors (see below), whose sum is σ = 20769632640. Its totient is φ = 19672928928.

The previous prime is 20221231229. The next prime is 20221231249. The reversal of 20221231231 is 13213212202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20221231231 - 2¹ = 20221231229 is a prime.

It is a super-2 number, since 2×20221231231² (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 = 20221231199 and 20221231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221231271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598005 + ... + 630913.

It is an arithmetic number, because the mean of its divisors is an integer number (2596204080).

Almost surely, 2^20221231231 is an apocalyptic number.

20221231231 is a deficient number, since it is larger than the sum of its proper divisors (548401409).

20221231231 is a wasteful number, since it uses less digits than its factorization.

20221231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49553.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20221231231 its reverse (13213212202), we get a palindrome (33434443433).

The spelling of 20221231231 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred thirty-one".