21323303092 has 24 divisors (see below), whose sum is σ = 45927115136. Its totient is φ = 8435592288.

The previous prime is 21323303041. The next prime is 21323303101. The reversal of 21323303092 is 29030332312.

It is a happy number.

It is a super-4 number, since 4×21323303092⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 21323303092.

It is a congruent number.

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, 29289888 + ... + 29290615.

Almost surely, 2^21323303092 is an apocalyptic number.

It is an amenable number.

21323303092 is an abundant number, since it is smaller than the sum of its proper divisors (24603812044).

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

21323303092 is a wasteful number, since it uses less digits than its factorization.

21323303092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58580527 (or 58580525 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

It can be divided in two parts, 21323 and 303092, that added together give a triangular number (324415 = T₈₀₅).

The spelling of 21323303092 in words is "twenty-one billion, three hundred twenty-three million, three hundred three thousand, ninety-two".