111241131 has 4 divisors (see below), whose sum is σ = 148321512. Its totient is φ = 74160752.

The previous prime is 111241127. The next prime is 111241153. The reversal of 111241131 is 131142111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111241131 - 2² = 111241127 is a prime.

It is a super-2 number, since 2×111241131² = 24749178452318322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111241131.

It is not an unprimeable number, because it can be changed into a prime (111241121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18540186 + ... + 18540191.

It is an arithmetic number, because the mean of its divisors is an integer number (37080378).

Almost surely, 2^111241131 is an apocalyptic number.

111241131 is a deficient number, since it is larger than the sum of its proper divisors (37080381).

111241131 is an equidigital number, since it uses as much as digits as its factorization.

111241131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37080380.

The product of its digits is 24, while the sum is 15.

The square root of 111241131 is about 10547.0911155636. The cubic root of 111241131 is about 480.9373048011.

Adding to 111241131 its reverse (131142111), we get a palindrome (242383242).

The spelling of 111241131 in words is "one hundred eleven million, two hundred forty-one thousand, one hundred thirty-one".