110391 has 8 divisors (see below), whose sum is σ = 152064. Its totient is φ = 71160.

The previous prime is 110359. The next prime is 110419. The reversal of 110391 is 193011.

110391 = 44² + 45² + ... + 74².

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

It is not a de Polignac number, because 110391 - 2⁵ = 110359 is a prime.

110391 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 110391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110311) 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, 501 + ... + 686.

It is an arithmetic number, because the mean of its divisors is an integer number (19008).

2¹¹⁰³⁹¹ is an apocalyptic number.

110391 is a deficient number, since it is larger than the sum of its proper divisors (41673).

110391 is a wasteful number, since it uses less digits than its factorization.

110391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 110391 is about 332.2514108322. The cubic root of 110391 is about 47.9709025036.

The spelling of 110391 in words is "one hundred ten thousand, three hundred ninety-one".