1111242231 has 24 divisors (see below), whose sum is σ = 1761816576. Its totient is φ = 669338640.

The previous prime is 1111242199. The next prime is 1111242259. The reversal of 1111242231 is 1322421111.

It is not a de Polignac number, because 1111242231 - 2⁵ = 1111242199 is a prime.

It is a super-2 number, since 2×1111242231² = 2469718591915714722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111242031) 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 in 23 ways as a sum of consecutive naturals, for example, 18295 + ... + 50568.

It is an arithmetic number, because the mean of its divisors is an integer number (73409024).

Almost surely, 2^1111242231 is an apocalyptic number.

1111242231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111242231 is a deficient number, since it is larger than the sum of its proper divisors (650574345).

1111242231 is a wasteful number, since it uses less digits than its factorization.

1111242231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69043 (or 69040 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1111242231 is about 33335.3000736457. The cubic root of 1111242231 is about 1035.7849090469.

Adding to 1111242231 its reverse (1322421111), we get a palindrome (2433663342).

It can be divided in two parts, 1111 and 242231, that added together give a palindrome (243342).

The spelling of 1111242231 in words is "one billion, one hundred eleven million, two hundred forty-two thousand, two hundred thirty-one".