21310403110 has 16 divisors (see below), whose sum is σ = 39250789776. Its totient is φ = 8325924768.

The previous prime is 21310403083. The next prime is 21310403111. The reversal of 21310403110 is 1130401312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310403111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24779109 + ... + 24779968.

It is an arithmetic number, because the mean of its divisors is an integer number (2453174361).

Almost surely, 2^21310403110 is an apocalyptic number.

21310403110 is a deficient number, since it is larger than the sum of its proper divisors (17940386666).

21310403110 is a wasteful number, since it uses less digits than its factorization.

21310403110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49559127.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21310403110 its reverse (1130401312), we get a palindrome (22440804422).

The spelling of 21310403110 in words is "twenty-one billion, three hundred ten million, four hundred three thousand, one hundred ten".