31201012201 has 4 divisors (see below), whose sum is σ = 31201433172. Its totient is φ = 31200591232.

The previous prime is 31201012189. The next prime is 31201012207. The reversal of 31201012201 is 10221010213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10758875625 + 20442136576 = 103725^2 + 142976^2 .

It is a cyclic number.

It is not a de Polignac number, because 31201012201 - 2³³ = 22611077609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31201012207) 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, 66460 + ... + 258493.

It is an arithmetic number, because the mean of its divisors is an integer number (7800358293).

Almost surely, 2^31201012201 is an apocalyptic number.

It is an amenable number.

31201012201 is a deficient number, since it is larger than the sum of its proper divisors (420971).

31201012201 is an equidigital number, since it uses as much as digits as its factorization.

31201012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420970.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31201012201 its reverse (10221010213), we get a palindrome (41422022414).

The spelling of 31201012201 in words is "thirty-one billion, two hundred one million, twelve thousand, two hundred one".