21348079231 has 8 divisors (see below), whose sum is σ = 21463057280. Its totient is φ = 21233273472.

The previous prime is 21348079163. The next prime is 21348079279. The reversal of 21348079231 is 13297084312.

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 21348079231 - 2³³ = 12758144639 is a prime.

It is a super-2 number, since 2×21348079231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21348079031) 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, 209371 + ... + 294163.

It is an arithmetic number, because the mean of its divisors is an integer number (2682882160).

Almost surely, 2^21348079231 is an apocalyptic number.

21348079231 is a deficient number, since it is larger than the sum of its proper divisors (114978049).

21348079231 is a wasteful number, since it uses less digits than its factorization.

21348079231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86145.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 21348079231 in words is "twenty-one billion, three hundred forty-eight million, seventy-nine thousand, two hundred thirty-one".