201031001 has 24 divisors (see below), whose sum is σ = 232239360. Its totient is φ = 173318400.

The previous prime is 201030941. The next prime is 201031003. The reversal of 201031001 is 100130102.

It is not a de Polignac number, because 201031001 - 2¹⁸ = 200768857 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 201031001.

It is not an unprimeable number, because it can be changed into a prime (201031003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169631 + ... + 170811.

It is an arithmetic number, because the mean of its divisors is an integer number (9676640).

Almost surely, 2^201031001 is an apocalyptic number.

It is an amenable number.

201031001 is a deficient number, since it is larger than the sum of its proper divisors (31208359).

201031001 is a wasteful number, since it uses less digits than its factorization.

201031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 201031001 is about 14178.5401575762. The cubic root of 201031001 is about 585.8067142399.

Adding to 201031001 its reverse (100130102), we get a palindrome (301161103).

The spelling of 201031001 in words is "two hundred one million, thirty-one thousand, one".