21313124030 has 128 divisors (see below), whose sum is σ = 45939363840. Its totient is φ = 7032960000.

The previous prime is 21313124017. The next prime is 21313124039. The reversal of 21313124030 is 3042131312.

It is a junction number, because it is equal to n+sod(n) for n = 21313123993 and 21313124011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313124039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6542162 + ... + 6545418.

It is an arithmetic number, because the mean of its divisors is an integer number (358901280).

Almost surely, 2^21313124030 is an apocalyptic number.

21313124030 is an abundant number, since it is smaller than the sum of its proper divisors (24626239810).

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

21313124030 is a wasteful number, since it uses less digits than its factorization.

21313124030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21313124030 its reverse (3042131312), we get a palindrome (24355255342).

The spelling of 21313124030 in words is "twenty-one billion, three hundred thirteen million, one hundred twenty-four thousand, thirty".