111328457 has 4 divisors (see below), whose sum is σ = 113215440. Its totient is φ = 109441476.

The previous prime is 111328447. The next prime is 111328463. The reversal of 111328457 is 754823111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111328457 - 2²⁰ = 110279881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111328447) 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, 943403 + ... + 943520.

It is an arithmetic number, because the mean of its divisors is an integer number (28303860).

Almost surely, 2^111328457 is an apocalyptic number.

It is an amenable number.

111328457 is a deficient number, since it is larger than the sum of its proper divisors (1886983).

111328457 is an equidigital number, since it uses as much as digits as its factorization.

111328457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886982.

The product of its digits is 6720, while the sum is 32.

The square root of 111328457 is about 10551.2301178583. The cubic root of 111328457 is about 481.0631196135.

The spelling of 111328457 in words is "one hundred eleven million, three hundred twenty-eight thousand, four hundred fifty-seven".