21323295 has 48 divisors (see below), whose sum is σ = 42631680. Its totient is φ = 9657792.

The previous prime is 21323293. The next prime is 21323297. The reversal of 21323295 is 59232312.

It is an interprime number because it is at equal distance from previous prime (21323293) and next prime (21323297).

It is not a de Polignac number, because 21323295 - 2¹ = 21323293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323293) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43542 + ... + 44028.

It is an arithmetic number, because the mean of its divisors is an integer number (888160).

Almost surely, 2^21323295 is an apocalyptic number.

21323295 is a deficient number, since it is larger than the sum of its proper divisors (21308385).

21323295 is a wasteful number, since it uses less digits than its factorization.

21323295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 641 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 21323295 is about 4617.7153441935. The cubic root of 21323295 is about 277.3010017179.

The spelling of 21323295 in words is "twenty-one million, three hundred twenty-three thousand, two hundred ninety-five".