21347202313 has 8 divisors (see below), whose sum is σ = 22277418048. Its totient is φ = 20417159664.

The previous prime is 21347202293. The next prime is 21347202367. The reversal of 21347202313 is 31320274312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21347202313 - 2²⁹ = 20810331401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21347202713) 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, 251595 + ... + 325567.

It is an arithmetic number, because the mean of its divisors is an integer number (2784677256).

Almost surely, 2^21347202313 is an apocalyptic number.

21347202313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21347202313 is a deficient number, since it is larger than the sum of its proper divisors (930215735).

21347202313 is a wasteful number, since it uses less digits than its factorization.

21347202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86543.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 21347202313 its reverse (31320274312), we get a palindrome (52667476625).

The spelling of 21347202313 in words is "twenty-one billion, three hundred forty-seven million, two hundred two thousand, three hundred thirteen".