1113223031 has 2 divisors, whose sum is σ = 1113223032. Its totient is φ = 1113223030.

The previous prime is 1113223009. The next prime is 1113223037. The reversal of 1113223031 is 1303223111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113223031 is a prime.

It is a super-2 number, since 2×1113223031² = 2478531033497653922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113223037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556611515 + 556611516.

It is an arithmetic number, because the mean of its divisors is an integer number (556611516).

Almost surely, 2^1113223031 is an apocalyptic number.

1113223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113223031 is an equidigital number, since it uses as much as digits as its factorization.

1113223031 is an evil number, because the sum of its binary digits is even.

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

The square root of 1113223031 is about 33364.9970927617. The cubic root of 1113223031 is about 1036.3999759358.

Adding to 1113223031 its reverse (1303223111), we get a palindrome (2416446142).

The spelling of 1113223031 in words is "one billion, one hundred thirteen million, two hundred twenty-three thousand, thirty-one".