31011200201 has 4 divisors (see below), whose sum is σ = 31090920900. Its totient is φ = 30931479504.

The previous prime is 31011200159. The next prime is 31011200261. The reversal of 31011200201 is 10200211013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10200211013 = 3529 ⋅2890397.

It can be written as a sum of positive squares in 2 ways, for example, as 2348371600 + 28662828601 = 48460^2 + 169301^2 .

It is a cyclic number.

It is not a de Polignac number, because 31011200201 - 2⁶ = 31011200137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31011200261) 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, 39859766 + ... + 39860543.

It is an arithmetic number, because the mean of its divisors is an integer number (7772730225).

Almost surely, 2^31011200201 is an apocalyptic number.

It is an amenable number.

31011200201 is a deficient number, since it is larger than the sum of its proper divisors (79720699).

31011200201 is an equidigital number, since it uses as much as digits as its factorization.

31011200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79720698.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31011200201 its reverse (10200211013), we get a palindrome (41211411214).

The spelling of 31011200201 in words is "thirty-one billion, eleven million, two hundred thousand, two hundred one".