1113111331 has 2 divisors, whose sum is σ = 1113111332. Its totient is φ = 1113111330.

The previous prime is 1113111319. The next prime is 1113111361. The reversal of 1113111331 is 1331113111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113111331 - 2¹⁹ = 1112587043 is a prime.

It is a super-2 number, since 2×1113111331² = 2478033670401183122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1113111361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556555665 + 556555666.

It is an arithmetic number, because the mean of its divisors is an integer number (556555666).

Almost surely, 2^1113111331 is an apocalyptic number.

1113111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113111331 is an equidigital number, since it uses as much as digits as its factorization.

1113111331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27, while the sum is 16.

The square root of 1113111331 is about 33363.3231408384. The cubic root of 1113111331 is about 1036.3653108997.

Adding to 1113111331 its reverse (1331113111), we get a palindrome (2444224442).

The spelling of 1113111331 in words is "one billion, one hundred thirteen million, one hundred eleven thousand, three hundred thirty-one".