201572131 has 4 divisors (see below), whose sum is σ = 201616912. Its totient is φ = 201527352.

The previous prime is 201572099. The next prime is 201572149. The reversal of 201572131 is 131275102.

It is a happy number.

201572131 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 is a cyclic number.

It is not a de Polignac number, because 201572131 - 2⁵ = 201572099 is a prime.

It is a super-2 number, since 2×201572131² = 81262647991762322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201572171) 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, 14775 + ... + 24928.

It is an arithmetic number, because the mean of its divisors is an integer number (50404228).

Almost surely, 2^201572131 is an apocalyptic number.

201572131 is a deficient number, since it is larger than the sum of its proper divisors (44781).

201572131 is an equidigital number, since it uses as much as digits as its factorization.

201572131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44780.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 201572131 is about 14197.6100453562. The cubic root of 201572131 is about 586.3318630672.

The spelling of 201572131 in words is "two hundred one million, five hundred seventy-two thousand, one hundred thirty-one".