11223031 has 2 divisors, whose sum is σ = 11223032. Its totient is φ = 11223030.

The previous prime is 11223007. The next prime is 11223067. The reversal of 11223031 is 13032211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11223031 - 2¹⁷ = 11091959 is a prime.

It is a super-2 number, since 2×11223031² = 251912849653922, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611515 + 5611516.

It is an arithmetic number, because the mean of its divisors is an integer number (5611516).

Almost surely, 2^11223031 is an apocalyptic number.

11223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223031 is an equidigital number, since it uses as much as digits as its factorization.

11223031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11223031 is about 3350.0792527939. The cubic root of 11223031 is about 223.8910436840.

Adding to 11223031 its reverse (13032211), we get a palindrome (24255242).

The spelling of 11223031 in words is "eleven million, two hundred twenty-three thousand, thirty-one".