201000331 has 4 divisors (see below), whose sum is σ = 229714672. Its totient is φ = 172285992.

The previous prime is 201000329. The next prime is 201000337. The reversal of 201000331 is 133000102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133000102 = 2 ⋅66500051.

It is a cyclic number.

It is not a de Polignac number, because 201000331 - 2¹ = 201000329 is a prime.

It is a super-2 number, since 2×201000331² = 80802266124219122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000337) 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, 14357160 + ... + 14357173.

It is an arithmetic number, because the mean of its divisors is an integer number (57428668).

Almost surely, 2^201000331 is an apocalyptic number.

201000331 is a deficient number, since it is larger than the sum of its proper divisors (28714341).

201000331 is an equidigital number, since it uses as much as digits as its factorization.

201000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28714340.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 201000331 is about 14177.4585522230. The cubic root of 201000331 is about 585.7769218106.

Adding to 201000331 its reverse (133000102), we get a palindrome (334000433).

The spelling of 201000331 in words is "two hundred one million, three hundred thirty-one", and thus it is an aban number.