222323131 has 4 divisors (see below), whose sum is σ = 224481712. Its totient is φ = 220164552.

The previous prime is 222323117. The next prime is 222323141. The reversal of 222323131 is 131323222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131323222 = 2 ⋅65661611.

It is a cyclic number.

It is not a de Polignac number, because 222323131 - 2⁹ = 222322619 is a prime.

It is a super-2 number, since 2×222323131² = 98855149155286322, 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 = 222323099 and 222323108.

It is not an unprimeable number, because it can be changed into a prime (222323111) 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, 1079136 + ... + 1079341.

It is an arithmetic number, because the mean of its divisors is an integer number (56120428).

Almost surely, 2^222323131 is an apocalyptic number.

222323131 is a deficient number, since it is larger than the sum of its proper divisors (2158581).

222323131 is a wasteful number, since it uses less digits than its factorization.

222323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158580.

The product of its digits is 432, while the sum is 19.

The square root of 222323131 is about 14910.5040491594. The cubic root of 222323131 is about 605.7985321127.

Adding to 222323131 its reverse (131323222), we get a palindrome (353646353).

Subtracting from 222323131 its reverse (131323222), we obtain a palindrome (90999909).

The spelling of 222323131 in words is "two hundred twenty-two million, three hundred twenty-three thousand, one hundred thirty-one".