31144022201 has 16 divisors (see below), whose sum is σ = 31871658000. Its totient is φ = 30423859200.

The previous prime is 31144022149. The next prime is 31144022207. The reversal of 31144022201 is 10222044113.

It can be written as a sum of positive squares in 8 ways, for example, as 12972982201 + 18171040000 = 113899^2 + 134800^2 .

It is a cyclic number.

It is not a de Polignac number, because 31144022201 - 2¹⁰ = 31144021177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144022207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11580665 + ... + 11583353.

It is an arithmetic number, because the mean of its divisors is an integer number (1991978625).

Almost surely, 2^31144022201 is an apocalyptic number.

It is an amenable number.

31144022201 is a deficient number, since it is larger than the sum of its proper divisors (727635799).

31144022201 is a wasteful number, since it uses less digits than its factorization.

31144022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31144022201 its reverse (10222044113), we get a palindrome (41366066314).

The spelling of 31144022201 in words is "thirty-one billion, one hundred forty-four million, twenty-two thousand, two hundred one".