201379523 has 4 divisors (see below), whose sum is σ = 203334768. Its totient is φ = 199424280.

The previous prime is 201379517. The next prime is 201379531. The reversal of 201379523 is 325973102.

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

It is a cyclic number.

It is not a de Polignac number, because 201379523 - 2⁶ = 201379459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201379523.

It is not an unprimeable number, because it can be changed into a prime (201379543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977468 + ... + 977673.

It is an arithmetic number, because the mean of its divisors is an integer number (50833692).

Almost surely, 2^201379523 is an apocalyptic number.

201379523 is a deficient number, since it is larger than the sum of its proper divisors (1955245).

201379523 is a wasteful number, since it uses less digits than its factorization.

201379523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955244.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 201379523 is about 14190.8253107421. The cubic root of 201379523 is about 586.1450512032.

The spelling of 201379523 in words is "two hundred one million, three hundred seventy-nine thousand, five hundred twenty-three".