223120993 has 4 divisors (see below), whose sum is σ = 224726320. Its totient is φ = 221515668.

The previous prime is 223120991. The next prime is 223121011. The reversal of 223120993 is 399021322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223120993 - 2¹ = 223120991 is a prime.

It is a super-3 number, since 3×223120993³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223120991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802455 + ... + 802732.

It is an arithmetic number, because the mean of its divisors is an integer number (56181580).

Almost surely, 2^223120993 is an apocalyptic number.

It is an amenable number.

223120993 is a deficient number, since it is larger than the sum of its proper divisors (1605327).

223120993 is a wasteful number, since it uses less digits than its factorization.

223120993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605326.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 223120993 is about 14937.2351189904. The cubic root of 223120993 is about 606.5223533012.

The spelling of 223120993 in words is "two hundred twenty-three million, one hundred twenty thousand, nine hundred ninety-three".