223311131 has 2 divisors, whose sum is σ = 223311132. Its totient is φ = 223311130.

The previous prime is 223311097. The next prime is 223311149. The reversal of 223311131 is 131113322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223311131 is a prime.

It is a super-2 number, since 2×223311131² = 99735722456998322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (223311181) 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, 111655565 + 111655566.

It is an arithmetic number, because the mean of its divisors is an integer number (111655566).

Almost surely, 2^223311131 is an apocalyptic number.

223311131 is a deficient number, since it is larger than the sum of its proper divisors (1).

223311131 is an equidigital number, since it uses as much as digits as its factorization.

223311131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 223311131 is about 14943.5983283813. The cubic root of 223311131 is about 606.6945919937.

Adding to 223311131 its reverse (131113322), we get a palindrome (354424453).

The spelling of 223311131 in words is "two hundred twenty-three million, three hundred eleven thousand, one hundred thirty-one".