31133113201 has 4 divisors (see below), whose sum is σ = 31144833252. Its totient is φ = 31121393152.

The previous prime is 31133113189. The next prime is 31133113213. The reversal of 31133113201 is 10231133113.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31133113189) and next prime (31133113213).

It can be written as a sum of positive squares in 2 ways, for example, as 15989349601 + 15143763600 = 126449^2 + 123060^2 .

It is a cyclic number.

It is not a de Polignac number, because 31133113201 - 2¹⁹ = 31132588913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133113261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5856040 + ... + 5861353.

It is an arithmetic number, because the mean of its divisors is an integer number (7786208313).

Almost surely, 2^31133113201 is an apocalyptic number.

It is an amenable number.

31133113201 is a deficient number, since it is larger than the sum of its proper divisors (11720051).

31133113201 is a wasteful number, since it uses less digits than its factorization.

31133113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11720050.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31133113201 its reverse (10231133113), we get a palindrome (41364246314).

The spelling of 31133113201 in words is "thirty-one billion, one hundred thirty-three million, one hundred thirteen thousand, two hundred one".