111231331 has 8 divisors (see below), whose sum is σ = 112244400. Its totient is φ = 110222112.

The previous prime is 111231313. The next prime is 111231353. The reversal of 111231331 is 133132111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111231331 - 2²⁵ = 77676899 is a prime.

It is a super-2 number, since 2×111231331² = 24744817992063122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111231031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101221 + ... + 102313.

It is an arithmetic number, because the mean of its divisors is an integer number (14030550).

Almost surely, 2^111231331 is an apocalyptic number.

111231331 is a deficient number, since it is larger than the sum of its proper divisors (1013069).

111231331 is a wasteful number, since it uses less digits than its factorization.

111231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its digits is 54, while the sum is 16.

The square root of 111231331 is about 10546.6265222582. The cubic root of 111231331 is about 480.9231813561.

Adding to 111231331 its reverse (133132111), we get a palindrome (244363442).

The spelling of 111231331 in words is "one hundred eleven million, two hundred thirty-one thousand, three hundred thirty-one".