21034030351 has 32 divisors (see below), whose sum is σ = 23894956800. Its totient is φ = 18395112960.

The previous prime is 21034030349. The next prime is 21034030363. The reversal of 21034030351 is 15303043012.

It is not a de Polignac number, because 21034030351 - 2¹ = 21034030349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034030321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10880581 + ... + 10882513.

It is an arithmetic number, because the mean of its divisors is an integer number (746717400).

Almost surely, 2^21034030351 is an apocalyptic number.

21034030351 is a deficient number, since it is larger than the sum of its proper divisors (2860926449).

21034030351 is a wasteful number, since it uses less digits than its factorization.

21034030351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 21034030351 its reverse (15303043012), we get a palindrome (36337073363).

The spelling of 21034030351 in words is "twenty-one billion, thirty-four million, thirty thousand, three hundred fifty-one".