21034313244 has 36 divisors (see below), whose sum is σ = 60765794544. Its totient is φ = 6009803712.

The previous prime is 21034313239. The next prime is 21034313249. The reversal of 21034313244 is 44231343012.

21034313244 is a `hidden beast` number, since 2 + 103 + 4 + 313 + 244 = 666.

It is an interprime number because it is at equal distance from previous prime (21034313239) and next prime (21034313249).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034313249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41734497 + ... + 41735000.

Almost surely, 2^21034313244 is an apocalyptic number.

It is an amenable number.

21034313244 is an abundant number, since it is smaller than the sum of its proper divisors (39731481300).

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

21034313244 is a wasteful number, since it uses less digits than its factorization.

21034313244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83469514 (or 83469509 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21034313244 its reverse (44231343012), we get a palindrome (65265656256).

The spelling of 21034313244 in words is "twenty-one billion, thirty-four million, three hundred thirteen thousand, two hundred forty-four".