222831 has 24 divisors (see below), whose sum is σ = 384384. Its totient is φ = 126360.

The previous prime is 222823. The next prime is 222839. The reversal of 222831 is 138222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222823) and next prime (222839).

It is not a de Polignac number, because 222831 - 2³ = 222823 is a prime.

It is a super-2 number, since 2×222831² = 99307309122, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1636 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (16016).

2²²²⁸³¹ is an apocalyptic number.

222831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222831 is a deficient number, since it is larger than the sum of its proper divisors (161553).

222831 is an equidigital number, since it uses as much as digits as its factorization.

222831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 141 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 222831 is about 472.0497855100. The cubic root of 222831 is about 60.6259471280.

The spelling of 222831 in words is "two hundred twenty-two thousand, eight hundred thirty-one".