222931 has 2 divisors, whose sum is σ = 222932. Its totient is φ = 222930.

The previous prime is 222919. The next prime is 222941. The reversal of 222931 is 139222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222931 - 2⁹ = 222419 is a prime.

It is a super-2 number, since 2×222931² = 99396461522, which contains 22 as substring.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁵ + 9 + 2¹⁷ + 3¹⁰ + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 222899 and 222908.

It is not a weakly prime, because it can be changed into another prime (222941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111465 + 111466.

It is an arithmetic number, because the mean of its divisors is an integer number (111466).

2²²²⁹³¹ is an apocalyptic number.

222931 is a deficient number, since it is larger than the sum of its proper divisors (1).

222931 is an equidigital number, since it uses as much as digits as its factorization.

222931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 222931 is about 472.1556946601. The cubic root of 222931 is about 60.6350148191.

The spelling of 222931 in words is "two hundred twenty-two thousand, nine hundred thirty-one".