21432302313 has 16 divisors (see below), whose sum is σ = 30114101376. Its totient is φ = 13531654400.

The previous prime is 21432302273. The next prime is 21432302329. The reversal of 21432302313 is 31320323412.

It is not a de Polignac number, because 21432302313 - 2⁹ = 21432301801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21432301313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530720 + ... + 1544657.

It is an arithmetic number, because the mean of its divisors is an integer number (1882131336).

Almost surely, 2^21432302313 is an apocalyptic number.

21432302313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21432302313 is a deficient number, since it is larger than the sum of its proper divisors (8681799063).

21432302313 is a wasteful number, since it uses less digits than its factorization.

21432302313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075504.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21432302313 its reverse (31320323412), we get a palindrome (52752625725).

The spelling of 21432302313 in words is "twenty-one billion, four hundred thirty-two million, three hundred two thousand, three hundred thirteen".