222831231 has 32 divisors (see below), whose sum is σ = 347263488. Its totient is φ = 124467840.

The previous prime is 222831163. The next prime is 222831263. The reversal of 222831231 is 132138222.

It is a happy number.

222831231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222831231 - 2¹⁴ = 222814847 is a prime.

It is a super-2 number, since 2×222831231² = 99307515017950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222831281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251916 + ... + 252798.

It is an arithmetic number, because the mean of its divisors is an integer number (10851984).

Almost surely, 2^222831231 is an apocalyptic number.

222831231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222831231 is a deficient number, since it is larger than the sum of its proper divisors (124432257).

222831231 is a wasteful number, since it uses less digits than its factorization.

222831231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its digits is 1152, while the sum is 24.

The square root of 222831231 is about 14927.5326494367. The cubic root of 222831231 is about 606.2596807750.

Adding to 222831231 its reverse (132138222), we get a palindrome (354969453).

The spelling of 222831231 in words is "two hundred twenty-two million, eight hundred thirty-one thousand, two hundred thirty-one".