113400191 has 4 divisors (see below), whose sum is σ = 113721792. Its totient is φ = 113078592.

The previous prime is 113400173. The next prime is 113400193. The reversal of 113400191 is 191004311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191004311 = 1181 ⋅161731.

It is a cyclic number.

It is not a de Polignac number, because 113400191 - 2¹⁴ = 113383807 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 (113400193) 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, 160271 + ... + 160976.

It is an arithmetic number, because the mean of its divisors is an integer number (28430448).

Almost surely, 2^113400191 is an apocalyptic number.

113400191 is a deficient number, since it is larger than the sum of its proper divisors (321601).

113400191 is an equidigital number, since it uses as much as digits as its factorization.

113400191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321600.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 113400191 is about 10648.9525776012. The cubic root of 113400191 is about 484.0288655575.

The spelling of 113400191 in words is "one hundred thirteen million, four hundred thousand, one hundred ninety-one".