31313103201 has 12 divisors (see below), whose sum is σ = 46905224912. Its totient is φ = 20875401972.

The previous prime is 31313103167. The next prime is 31313103247. The reversal of 31313103201 is 10230131313.

It is a happy number.

31313103201 is a `hidden beast` number, since 3 + 1 + 31 + 310 + 320 + 1 = 666.

It is not a de Polignac number, because 31313103201 - 2⁶ = 31313103137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31313103901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64430011 + ... + 64430496.

Almost surely, 2^31313103201 is an apocalyptic number.

It is an amenable number.

31313103201 is a deficient number, since it is larger than the sum of its proper divisors (15592121711).

31313103201 is an equidigital number, since it uses as much as digits as its factorization.

31313103201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128860522 (or 128860510 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31313103201 its reverse (10230131313), we get a palindrome (41543234514).

The spelling of 31313103201 in words is "thirty-one billion, three hundred thirteen million, one hundred three thousand, two hundred one".