21403031314320 has 60 divisors (see below), whose sum is σ = 71878513499676. Its totient is φ = 5707475016960.

The previous prime is 21403031314319. The next prime is 21403031314331. The reversal of 21403031314320 is 2341313030412.

It is a happy number.

21403031314320 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 303 + 1 + 31 + 4 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10968787591056 + 10434243723264 = 3311916^2 + 3230208^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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, 14863215471 + ... + 14863216910.

Almost surely, 2^{21403031314320} is an apocalyptic number.

21403031314320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21403031314320 is an abundant number, since it is smaller than the sum of its proper divisors (50475482185356).

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

21403031314320 is a wasteful number, since it uses less digits than its factorization.

21403031314320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29726432400 (or 29726432391 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21403031314320 its reverse (2341313030412), we get a palindrome (23744344344732).

The spelling of 21403031314320 in words is "twenty-one trillion, four hundred three billion, thirty-one million, three hundred fourteen thousand, three hundred twenty".