31121113201 has 8 divisors (see below), whose sum is σ = 31153716000. Its totient is φ = 31088531040.

The previous prime is 31121113169. The next prime is 31121113241. The reversal of 31121113201 is 10231112113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31121113201 - 2⁵ = 31121113169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31121113241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5971885 + ... + 5977093.

It is an arithmetic number, because the mean of its divisors is an integer number (3894214500).

Almost surely, 2^31121113201 is an apocalyptic number.

It is an amenable number.

31121113201 is a deficient number, since it is larger than the sum of its proper divisors (32602799).

31121113201 is a wasteful number, since it uses less digits than its factorization.

31121113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31121113201 its reverse (10231112113), we get a palindrome (41352225314).

The spelling of 31121113201 in words is "thirty-one billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred one".