21310323024 has 40 divisors (see below), whose sum is σ = 55098428832. Its totient is φ = 7097407360.

The previous prime is 21310322989. The next prime is 21310323037. The reversal of 21310323024 is 42032301312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131274 + ... + 244649.

Almost surely, 2^21310323024 is an apocalyptic number.

21310323024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21310323024 is an abundant number, since it is smaller than the sum of its proper divisors (33788105808).

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

21310323024 is a wasteful number, since it uses less digits than its factorization.

21310323024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377115 (or 377109 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21310323024 its reverse (42032301312), we get a palindrome (63342624336).

The spelling of 21310323024 in words is "twenty-one billion, three hundred ten million, three hundred twenty-three thousand, twenty-four".