31011230201 has 6 divisors (see below), whose sum is σ = 36074288250. Its totient is φ = 26581054416.

The previous prime is 31011230197. The next prime is 31011230213. The reversal of 31011230201 is 10203211013.

It can be written as a sum of positive squares in only one way, i.e., 24762169600 + 6249060601 = 157360^2 + 79051^2 .

It is not a de Polignac number, because 31011230201 - 2² = 31011230197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31011230231) 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, 316441076 + ... + 316441173.

It is an arithmetic number, because the mean of its divisors is an integer number (6012381375).

Almost surely, 2^31011230201 is an apocalyptic number.

It is an amenable number.

31011230201 is a deficient number, since it is larger than the sum of its proper divisors (5063058049).

31011230201 is an equidigital number, since it uses as much as digits as its factorization.

31011230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632882263 (or 632882256 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31011230201 its reverse (10203211013), we get a palindrome (41214441214).

The spelling of 31011230201 in words is "thirty-one billion, eleven million, two hundred thirty thousand, two hundred one".