223115231 has 4 divisors (see below), whose sum is σ = 223777632. Its totient is φ = 222452832.

The previous prime is 223115177. The next prime is 223115237. The reversal of 223115231 is 132511322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132511322 = 2 ⋅66255661.

It is a cyclic number.

It is not a de Polignac number, because 223115231 - 2²² = 218920927 is a prime.

It is a super-3 number, since 3×223115231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223115237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330695 + ... + 331368.

It is an arithmetic number, because the mean of its divisors is an integer number (55944408).

Almost surely, 2^223115231 is an apocalyptic number.

223115231 is a deficient number, since it is larger than the sum of its proper divisors (662401).

223115231 is an equidigital number, since it uses as much as digits as its factorization.

223115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662400.

The product of its digits is 360, while the sum is 20.

The square root of 223115231 is about 14937.0422440321. The cubic root of 223115231 is about 606.5171322000.

Adding to 223115231 its reverse (132511322), we get a palindrome (355626553).

The spelling of 223115231 in words is "two hundred twenty-three million, one hundred fifteen thousand, two hundred thirty-one".