111680251 has 4 divisors (see below), whose sum is σ = 112532904. Its totient is φ = 110827600.

The previous prime is 111680243. The next prime is 111680263. The reversal of 111680251 is 152086111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152086111 = 6343 ⋅23977.

It is a cyclic number.

It is not a de Polignac number, because 111680251 - 2³ = 111680243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111680221) 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, 426130 + ... + 426391.

It is an arithmetic number, because the mean of its divisors is an integer number (28133226).

Almost surely, 2^111680251 is an apocalyptic number.

111680251 is a deficient number, since it is larger than the sum of its proper divisors (852653).

111680251 is an equidigital number, since it uses as much as digits as its factorization.

111680251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852652.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 111680251 is about 10567.8877265043. The cubic root of 111680251 is about 481.5693009827.

The spelling of 111680251 in words is "one hundred eleven million, six hundred eighty thousand, two hundred fifty-one".