223331331 has 4 divisors (see below), whose sum is σ = 297775112. Its totient is φ = 148887552.

The previous prime is 223331323. The next prime is 223331333. The reversal of 223331331 is 133133322.

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

It is not a de Polignac number, because 223331331 - 2³ = 223331323 is a prime.

It is a super-2 number, since 2×223331331² = 99753766812463122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223331298 and 223331307.

It is not an unprimeable number, because it can be changed into a prime (223331333) 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, 37221886 + ... + 37221891.

It is an arithmetic number, because the mean of its divisors is an integer number (74443778).

Almost surely, 2^223331331 is an apocalyptic number.

223331331 is a deficient number, since it is larger than the sum of its proper divisors (74443781).

223331331 is an equidigital number, since it uses as much as digits as its factorization.

223331331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74443780.

The product of its digits is 972, while the sum is 21.

The square root of 223331331 is about 14944.2741877951. The cubic root of 223331331 is about 606.7128846499.

Adding to 223331331 its reverse (133133322), we get a palindrome (356464653).

The spelling of 223331331 in words is "two hundred twenty-three million, three hundred thirty-one thousand, three hundred thirty-one".