223031131 has 4 divisors (see below), whose sum is σ = 223290432. Its totient is φ = 222771832.

The previous prime is 223031119. The next prime is 223031147. The reversal of 223031131 is 131130322.

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

It is a cyclic number.

It is not a de Polignac number, because 223031131 - 2⁵ = 223031099 is a prime.

It is a super-2 number, since 2×223031131² = 99485770790278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223031111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128356 + ... + 130081.

It is an arithmetic number, because the mean of its divisors is an integer number (55822608).

Almost surely, 2^223031131 is an apocalyptic number.

223031131 is a deficient number, since it is larger than the sum of its proper divisors (259301).

223031131 is an equidigital number, since it uses as much as digits as its factorization.

223031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259300.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 223031131 is about 14934.2268296688. The cubic root of 223031131 is about 606.4409167233.

Adding to 223031131 its reverse (131130322), we get a palindrome (354161453).

The spelling of 223031131 in words is "two hundred twenty-three million, thirty-one thousand, one hundred thirty-one".