191357201 has 12 divisors (see below), whose sum is σ = 222879348. Its totient is φ = 163814112.

The previous prime is 191357161. The next prime is 191357213. The reversal of 191357201 is 102753191.

191357201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 159997201 + 31360000 = 12649^2 + 5600^2 .

It is not a de Polignac number, because 191357201 - 2⁶ = 191357137 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 (191357261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46895 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (18573279).

Almost surely, 2^191357201 is an apocalyptic number.

It is an amenable number.

191357201 is a deficient number, since it is larger than the sum of its proper divisors (31522147).

191357201 is an equidigital number, since it uses as much as digits as its factorization.

191357201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928 (or 4921 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 191357201 is about 13833.1920032941. The cubic root of 191357201 is about 576.2553051367.

The spelling of 191357201 in words is "one hundred ninety-one million, three hundred fifty-seven thousand, two hundred one".