31330201 has 16 divisors (see below), whose sum is σ = 38085120. Its totient is φ = 25247040.

The previous prime is 31330193. The next prime is 31330217. The reversal of 31330201 is 10203313.

It is not a de Polignac number, because 31330201 - 2³ = 31330193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31330291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33936 + ... + 34846.

It is an arithmetic number, because the mean of its divisors is an integer number (2380320).

Almost surely, 2^31330201 is an apocalyptic number.

It is an amenable number.

31330201 is a deficient number, since it is larger than the sum of its proper divisors (6754919).

31330201 is an frugal number, since it uses more digits than its factorization.

31330201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 31330201 is about 5597.3387426526. The cubic root of 31330201 is about 315.2494907612.

Adding to 31330201 its reverse (10203313), we get a palindrome (41533514).

The spelling of 31330201 in words is "thirty-one million, three hundred thirty thousand, two hundred one".