201191029 has 8 divisors (see below), whose sum is σ = 216958392. Its totient is φ = 185465280.

The previous prime is 201190999. The next prime is 201191047. The reversal of 201191029 is 920191102.

It can be written as a sum of positive squares in 4 ways, for example, as 24354225 + 176836804 = 4935^2 + 13298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201191029 - 2¹³ = 201182837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201190994 and 201191012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201191069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39 + ... + 20059.

It is an arithmetic number, because the mean of its divisors is an integer number (27119799).

Almost surely, 2^201191029 is an apocalyptic number.

It is an amenable number.

201191029 is a deficient number, since it is larger than the sum of its proper divisors (15767363).

201191029 is a wasteful number, since it uses less digits than its factorization.

201191029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 201191029 is about 14184.1823521837. The cubic root of 201191029 is about 585.9621141740.

The spelling of 201191029 in words is "two hundred one million, one hundred ninety-one thousand, twenty-nine".