31144203201 has 24 divisors (see below), whose sum is σ = 44355910144. Its totient is φ = 19433399040.

The previous prime is 31144203199. The next prime is 31144203217. The reversal of 31144203201 is 10230244113.

It is not a de Polignac number, because 31144203201 - 2¹ = 31144203199 is a prime.

It is a super-2 number, since 2×31144203201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144203301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57696 + ... + 256158.

Almost surely, 2^31144203201 is an apocalyptic number.

It is an amenable number.

31144203201 is a deficient number, since it is larger than the sum of its proper divisors (13211706943).

31144203201 is a wasteful number, since it uses less digits than its factorization.

31144203201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198681 (or 198664 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31144203201 its reverse (10230244113), we get a palindrome (41374447314).

The spelling of 31144203201 in words is "thirty-one billion, one hundred forty-four million, two hundred three thousand, two hundred one".