21304000401 has 32 divisors (see below), whose sum is σ = 31476695040. Its totient is φ = 12756167424.

The previous prime is 21304000391. The next prime is 21304000423. The reversal of 21304000401 is 10400040312.

It is not a de Polignac number, because 21304000401 - 2⁶ = 21304000337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21304000441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76240 + ... + 220046.

It is an arithmetic number, because the mean of its divisors is an integer number (983646720).

Almost surely, 2^21304000401 is an apocalyptic number.

It is an amenable number.

21304000401 is a deficient number, since it is larger than the sum of its proper divisors (10172694639).

21304000401 is a wasteful number, since it uses less digits than its factorization.

21304000401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143965.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21304000401 its reverse (10400040312), we get a palindrome (31704040713).

The spelling of 21304000401 in words is "twenty-one billion, three hundred four million, four hundred one", and thus it is an aban number.