21023034310 has 128 divisors (see below), whose sum is σ = 42456960000. Its totient is φ = 7458688512.

The previous prime is 21023034271. The next prime is 21023034317. The reversal of 21023034310 is 1343032012.

It is a super-2 number, since 2×21023034310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023034317) 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, 54043596 + ... + 54043984.

It is an arithmetic number, because the mean of its divisors is an integer number (331695000).

Almost surely, 2^21023034310 is an apocalyptic number.

21023034310 is an abundant number, since it is smaller than the sum of its proper divisors (21433925690).

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

21023034310 is a wasteful number, since it uses less digits than its factorization.

21023034310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21023034310 its reverse (1343032012), we get a palindrome (22366066322).

The spelling of 21023034310 in words is "twenty-one billion, twenty-three million, thirty-four thousand, three hundred ten".