191000113 has 4 divisors (see below), whose sum is σ = 191029860. Its totient is φ = 190970368.

The previous prime is 191000107. The next prime is 191000129. The reversal of 191000113 is 311000191.

It is a happy number.

191000113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73667889 + 117332224 = 8583^2 + 10832^2 .

It is a cyclic number.

It is not a de Polignac number, because 191000113 - 2¹³ = 190991921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191000143) 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, 808 + ... + 19561.

It is an arithmetic number, because the mean of its divisors is an integer number (47757465).

Almost surely, 2^191000113 is an apocalyptic number.

It is an amenable number.

191000113 is a deficient number, since it is larger than the sum of its proper divisors (29747).

191000113 is an equidigital number, since it uses as much as digits as its factorization.

191000113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746.

The product of its (nonzero) digits is 27, while the sum is 16.

The square root of 191000113 is about 13820.2790492812. The cubic root of 191000113 is about 575.8966356204.

The spelling of 191000113 in words is "one hundred ninety-one million, one hundred thirteen", and thus it is an aban number.