111681053 has 8 divisors (see below), whose sum is σ = 123041376. Its totient is φ = 100522000.

The previous prime is 111681043. The next prime is 111681061. The reversal of 111681053 is 350186111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111681053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111681023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49151 + ... + 51372.

It is an arithmetic number, because the mean of its divisors is an integer number (15380172).

Almost surely, 2^111681053 is an apocalyptic number.

It is an amenable number.

111681053 is a deficient number, since it is larger than the sum of its proper divisors (11360323).

111681053 is a wasteful number, since it uses less digits than its factorization.

111681053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100635.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 111681053 is about 10567.9256715781. The cubic root of 111681053 is about 481.5704537310.

It can be divided in two parts, 11168 and 1053, that added together give a palindrome (12221).

The spelling of 111681053 in words is "one hundred eleven million, six hundred eighty-one thousand, fifty-three".