31301212201 has 6 divisors (see below), whose sum is σ = 36411614250. Its totient is φ = 26829610416.

The previous prime is 31301212183. The next prime is 31301212223. The reversal of 31301212201 is 10221210313.

It can be written as a sum of positive squares in only one way, i.e., 28791302400 + 2509909801 = 169680^2 + 50099^2 .

It is not a de Polignac number, because 31301212201 - 2¹¹ = 31301210153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31301212231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319400076 + ... + 319400173.

It is an arithmetic number, because the mean of its divisors is an integer number (6068602375).

Almost surely, 2^31301212201 is an apocalyptic number.

It is an amenable number.

31301212201 is a deficient number, since it is larger than the sum of its proper divisors (5110402049).

31301212201 is an equidigital number, since it uses as much as digits as its factorization.

31301212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638800263 (or 638800256 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31301212201 its reverse (10221210313), we get a palindrome (41522422514).

The spelling of 31301212201 in words is "thirty-one billion, three hundred one million, two hundred twelve thousand, two hundred one".