223561391 has 8 divisors (see below), whose sum is σ = 236100480. Its totient is φ = 211099608.

The previous prime is 223561381. The next prime is 223561399. The reversal of 223561391 is 193165322.

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 223561391 - 2²² = 219367087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223561399) 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, 13331 + ... + 24996.

It is an arithmetic number, because the mean of its divisors is an integer number (29512560).

Almost surely, 2^223561391 is an apocalyptic number.

223561391 is a deficient number, since it is larger than the sum of its proper divisors (12539089).

223561391 is a wasteful number, since it uses less digits than its factorization.

223561391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38653.

The product of its digits is 9720, while the sum is 32.

The square root of 223561391 is about 14951.9694689362. The cubic root of 223561391 is about 606.9211439277.

The spelling of 223561391 in words is "two hundred twenty-three million, five hundred sixty-one thousand, three hundred ninety-one".