222539131 has 2 divisors, whose sum is σ = 222539132. Its totient is φ = 222539130.

The previous prime is 222539123. The next prime is 222539143. The reversal of 222539131 is 131935222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222539131 - 2³ = 222539123 is a prime.

It is a super-2 number, since 2×222539131² = 99047329652470322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_12254671 and since 222539131 and 12254671 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222539131.

It is not a weakly prime, because it can be changed into another prime (222539171) 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 as a sum of consecutive naturals, namely, 111269565 + 111269566.

It is an arithmetic number, because the mean of its divisors is an integer number (111269566).

Almost surely, 2^222539131 is an apocalyptic number.

222539131 is a deficient number, since it is larger than the sum of its proper divisors (1).

222539131 is an equidigital number, since it uses as much as digits as its factorization.

222539131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 222539131 is about 14917.7455066106. The cubic root of 222539131 is about 605.9946582471.

The spelling of 222539131 in words is "two hundred twenty-two million, five hundred thirty-nine thousand, one hundred thirty-one".