111242031 has 8 divisors (see below), whose sum is σ = 148977024. Its totient is φ = 73834200.

The previous prime is 111242011. The next prime is 111242039. The reversal of 111242031 is 130242111.

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

It is not a de Polignac number, because 111242031 - 2¹⁰ = 111241007 is a prime.

It is a super-2 number, since 2×111242031² = 24749578922009922, 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 111242031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111242039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80995 + ... + 82356.

It is an arithmetic number, because the mean of its divisors is an integer number (18622128).

Almost surely, 2^111242031 is an apocalyptic number.

111242031 is a deficient number, since it is larger than the sum of its proper divisors (37734993).

111242031 is a wasteful number, since it uses less digits than its factorization.

111242031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163581.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111242031 is about 10547.1337812697. The cubic root of 111242031 is about 480.9386018106.

Adding to 111242031 its reverse (130242111), we get a palindrome (241484142).

The spelling of 111242031 in words is "one hundred eleven million, two hundred forty-two thousand, thirty-one".