111351 has 4 divisors (see below), whose sum is σ = 148472. Its totient is φ = 74232.

The previous prime is 111347. The next prime is 111373. The reversal of 111351 is 153111.

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

It is not a de Polignac number, because 111351 - 2² = 111347 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111301) 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, 18556 + ... + 18561.

It is an arithmetic number, because the mean of its divisors is an integer number (37118).

2¹¹¹³⁵¹ is an apocalyptic number.

111351 is a deficient number, since it is larger than the sum of its proper divisors (37121).

111351 is an equidigital number, since it uses as much as digits as its factorization.

111351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37120.

The product of its digits is 15, while the sum is 12.

The square root of 111351 is about 333.6929726560. The cubic root of 111351 is about 48.1095587724.

Adding to 111351 its reverse (153111), we get a palindrome (264462).

The spelling of 111351 in words is "one hundred eleven thousand, three hundred fifty-one".