31020002230201 has 4 divisors (see below), whose sum is σ = 31020404449012. Its totient is φ = 31019600011392.

The previous prime is 31020002230199. The next prime is 31020002230237. The reversal of 31020002230201 is 10203220002013.

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 22704414957225 + 8315587272976 = 4764915^2 + 2883676^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020002230201 - 2¹ = 31020002230199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020002230501) 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, 200993700 + ... + 201147973.

It is an arithmetic number, because the mean of its divisors is an integer number (7755101112253).

Almost surely, 2^{31020002230201} is an apocalyptic number.

It is an amenable number.

31020002230201 is a deficient number, since it is larger than the sum of its proper divisors (402218811).

31020002230201 is an equidigital number, since it uses as much as digits as its factorization.

31020002230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402218810.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31020002230201 its reverse (10203220002013), we get a palindrome (41223222232214).

The spelling of 31020002230201 in words is "thirty-one trillion, twenty billion, two million, two hundred thirty thousand, two hundred one".