21304002310 has 32 divisors (see below), whose sum is σ = 40024046592. Its totient is φ = 8149146720.

The previous prime is 21304002299. The next prime is 21304002323. The reversal of 21304002310 is 1320040312.

It is a happy number.

It is a super-2 number, since 2×21304002310² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1277647 + ... + 1294213.

It is an arithmetic number, because the mean of its divisors is an integer number (1250751456).

Almost surely, 2^21304002310 is an apocalyptic number.

21304002310 is a deficient number, since it is larger than the sum of its proper divisors (18720044282).

21304002310 is a wasteful number, since it uses less digits than its factorization.

21304002310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22188.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21304002310 its reverse (1320040312), we get a palindrome (22624042622).

The spelling of 21304002310 in words is "twenty-one billion, three hundred four million, two thousand, three hundred ten".