20431976922 has 64 divisors (see below), whose sum is σ = 53097538560. Its totient is φ = 5701942512.

The previous prime is 20431976921. The next prime is 20431976927. The reversal of 20431976922 is 22967913402.

It is a super-2 number, since 2×20431976922² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20431976921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612268 + ... + 644775.

It is an arithmetic number, because the mean of its divisors is an integer number (829649040).

Almost surely, 2^20431976922 is an apocalyptic number.

20431976922 is an abundant number, since it is smaller than the sum of its proper divisors (32665561638).

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

20431976922 is a wasteful number, since it uses less digits than its factorization.

20431976922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257104 (or 1257098 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 20431976922 in words is "twenty billion, four hundred thirty-one million, nine hundred seventy-six thousand, nine hundred twenty-two".