21310402300 has 36 divisors (see below), whose sum is σ = 50447536776. Its totient is φ = 7749236800.

The previous prime is 21310402297. The next prime is 21310402327. The reversal of 21310402300 is 320401312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9685447 + ... + 9687646.

It is an arithmetic number, because the mean of its divisors is an integer number (1401320466).

Almost surely, 2^21310402300 is an apocalyptic number.

21310402300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310402300 is an abundant number, since it is smaller than the sum of its proper divisors (29137134476).

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

21310402300 is a wasteful number, since it uses less digits than its factorization.

21310402300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19373118 (or 19373111 counting only the distinct ones).

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

Adding to 21310402300 its reverse (320401312), we get a palindrome (21630803612).

The spelling of 21310402300 in words is "twenty-one billion, three hundred ten million, four hundred two thousand, three hundred".