20220231144 has 32 divisors (see below), whose sum is σ = 50572257120. Its totient is φ = 6737186496.

The previous prime is 20220231133. The next prime is 20220231173. The reversal of 20220231144 is 44113202202.

It is a self number, because there is not a number n which added to its sum of digits gives 20220231144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123159 + ... + 235814.

It is an arithmetic number, because the mean of its divisors is an integer number (1580383035).

Almost surely, 2^20220231144 is an apocalyptic number.

20220231144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20220231144 is an abundant number, since it is smaller than the sum of its proper divisors (30352025976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20220231144 is a wasteful number, since it uses less digits than its factorization.

20220231144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361329 (or 361325 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20220231144 its reverse (44113202202), we get a palindrome (64333433346).

The spelling of 20220231144 in words is "twenty billion, two hundred twenty million, two hundred thirty-one thousand, one hundred forty-four".