20023031992 has 16 divisors (see below), whose sum is σ = 37577424960. Its totient is φ = 10002385344.

The previous prime is 20023031983. The next prime is 20023032019. The reversal of 20023031992 is 29913032002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132008 + ... + 1149559.

It is an arithmetic number, because the mean of its divisors is an integer number (2348589060).

Almost surely, 2^20023031992 is an apocalyptic number.

It is an amenable number.

20023031992 is a deficient number, since it is larger than the sum of its proper divisors (17554392968).

20023031992 is a wasteful number, since it uses less digits than its factorization.

20023031992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282670 (or 2282666 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

Adding to 20023031992 its reverse (29913032002), we get a palindrome (49936063994).

The spelling of 20023031992 in words is "twenty billion, twenty-three million, thirty-one thousand, nine hundred ninety-two".