21023031096 has 192 divisors, whose sum is σ = 62040232800. Its totient is φ = 6405120000.

The previous prime is 21023031091. The next prime is 21023031097. The reversal of 21023031096 is 69013032012.

It is a super-2 number, since 2×21023031096² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023031091) 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 47 ways as a sum of consecutive naturals, for example, 12595350 + ... + 12597018.

Almost surely, 2^21023031096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21023031096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31020116400).

21023031096 is an abundant number, since it is smaller than the sum of its proper divisors (41017201704).

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

21023031096 is a wasteful number, since it uses less digits than its factorization.

21023031096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 21023031096 in words is "twenty-one billion, twenty-three million, thirty-one thousand, ninety-six".