21313010310 has 64 divisors (see below), whose sum is σ = 53913574080. Its totient is φ = 5383938560.

The previous prime is 21313010297. The next prime is 21313010351. The reversal of 21313010310 is 1301031312.

It is a super-2 number, since 2×21313010310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21313010310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185001 + ... + 277220.

It is an arithmetic number, because the mean of its divisors is an integer number (842399595).

Almost surely, 2^21313010310 is an apocalyptic number.

21313010310 is an abundant number, since it is smaller than the sum of its proper divisors (32600563770).

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

21313010310 is a wasteful number, since it uses less digits than its factorization.

21313010310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462313.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21313010310 its reverse (1301031312), we get a palindrome (22614041622).

The spelling of 21313010310 in words is "twenty-one billion, three hundred thirteen million, ten thousand, three hundred ten".