20223235231 has 8 divisors (see below), whose sum is σ = 21830179680. Its totient is φ = 18676930272.

The previous prime is 20223235213. The next prime is 20223235243. The reversal of 20223235231 is 13253232202.

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 20223235231 - 2¹⁹ = 20222710943 is a prime.

It is a super-2 number, since 2×20223235231² (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 = 20223235196 and 20223235205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223235211) 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, 15159180 + ... + 15160513.

It is an arithmetic number, because the mean of its divisors is an integer number (2728772460).

Almost surely, 2^20223235231 is an apocalyptic number.

20223235231 is a deficient number, since it is larger than the sum of its proper divisors (1606944449).

20223235231 is a wasteful number, since it uses less digits than its factorization.

20223235231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30319745.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20223235231 its reverse (13253232202), we get a palindrome (33476467433).

The spelling of 20223235231 in words is "twenty billion, two hundred twenty-three million, two hundred thirty-five thousand, two hundred thirty-one".