20931846323 has 4 divisors (see below), whose sum is σ = 20933178120. Its totient is φ = 20930514528.

The previous prime is 20931846311. The next prime is 20931846347. The reversal of 20931846323 is 32364813902.

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 20931846323 - 2⁴ = 20931846307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20931846373) 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, 642038 + ... + 673851.

It is an arithmetic number, because the mean of its divisors is an integer number (5233294530).

Almost surely, 2^20931846323 is an apocalyptic number.

20931846323 is a deficient number, since it is larger than the sum of its proper divisors (1331797).

20931846323 is a wasteful number, since it uses less digits than its factorization.

20931846323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331796.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 20931846323 in words is "twenty billion, nine hundred thirty-one million, eight hundred forty-six thousand, three hundred twenty-three".