20220231173 has 2 divisors, whose sum is σ = 20220231174. Its totient is φ = 20220231172.

The previous prime is 20220231133. The next prime is 20220231181. The reversal of 20220231173 is 37113202202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18753111364 + 1467119809 = 136942^2 + 38303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20220231173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220231133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110115586 + 10110115587.

It is an arithmetic number, because the mean of its divisors is an integer number (10110115587).

Almost surely, 2^20220231173 is an apocalyptic number.

It is an amenable number.

20220231173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220231173 is an equidigital number, since it uses as much as digits as its factorization.

20220231173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 20220231173 its reverse (37113202202), we get a palindrome (57333433375).

The spelling of 20220231173 in words is "twenty billion, two hundred twenty million, two hundred thirty-one thousand, one hundred seventy-three".