201000031 has 8 divisors (see below), whose sum is σ = 212849280. Its totient is φ = 189277848.

The previous prime is 200999983. The next prime is 201000049. The reversal of 201000031 is 130000102.

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

It is not a de Polignac number, because 201000031 - 2¹¹ = 200997983 is a prime.

It is a super-2 number, since 2×201000031² = 80802024924001922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200999978 and 201000023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28501 + ... + 34846.

It is an arithmetic number, because the mean of its divisors is an integer number (26606160).

Almost surely, 2^201000031 is an apocalyptic number.

201000031 is a deficient number, since it is larger than the sum of its proper divisors (11849249).

201000031 is a wasteful number, since it uses less digits than its factorization.

201000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63533.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 201000031 is about 14177.4479720435. The cubic root of 201000031 is about 585.7766303796.

Adding to 201000031 its reverse (130000102), we get a palindrome (331000133).

The spelling of 201000031 in words is "two hundred one million, thirty-one", and thus it is an aban number.