20220123031 has 4 divisors (see below), whose sum is σ = 20221313200. Its totient is φ = 20218932864.

The previous prime is 20220123013. The next prime is 20220123041. The reversal of 20220123031 is 13032102202.

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 20220123031 - 2²⁵ = 20186568599 is a prime.

It is a super-2 number, since 2×20220123031² (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 = 20220122996 and 20220123014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220123041) 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, 569226 + ... + 603703.

It is an arithmetic number, because the mean of its divisors is an integer number (5055328300).

Almost surely, 2^20220123031 is an apocalyptic number.

20220123031 is a deficient number, since it is larger than the sum of its proper divisors (1190169).

20220123031 is a wasteful number, since it uses less digits than its factorization.

20220123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190168.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20220123031 its reverse (13032102202), we get a palindrome (33252225233).

The spelling of 20220123031 in words is "twenty billion, two hundred twenty million, one hundred twenty-three thousand, thirty-one".