363223921 has 4 divisors (see below), whose sum is σ = 384590052. Its totient is φ = 341857792.

The previous prime is 363223919. The next prime is 363223979. The reversal of 363223921 is 129322363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131423296 + 231800625 = 11464^2 + 15225^2 .

It is a cyclic number.

It is not a de Polignac number, because 363223921 - 2¹ = 363223919 is a prime.

It is a super-2 number, since 2×363223921² = 263863233573228482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (363223121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10683040 + ... + 10683073.

It is an arithmetic number, because the mean of its divisors is an integer number (96147513).

Almost surely, 2^363223921 is an apocalyptic number.

It is an amenable number.

363223921 is a deficient number, since it is larger than the sum of its proper divisors (21366131).

363223921 is a wasteful number, since it uses less digits than its factorization.

363223921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21366130.

The product of its digits is 11664, while the sum is 31.

The square root of 363223921 is about 19058.4343795601. The cubic root of 363223921 is about 713.4958982325.

The spelling of 363223921 in words is "three hundred sixty-three million, two hundred twenty-three thousand, nine hundred twenty-one".