31331203201 has 8 divisors (see below), whose sum is σ = 33219486504. Its totient is φ = 29447950080.

The previous prime is 31331203171. The next prime is 31331203207. The reversal of 31331203201 is 10230213313.

It can be written as a sum of positive squares in 4 ways, for example, as 27688960000 + 3642243201 = 166400^2 + 60351^2 .

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 31331203201 - 2²⁷ = 31196985473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31331203207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244710 + ... + 1269631.

It is an arithmetic number, because the mean of its divisors is an integer number (4152435813).

Almost surely, 2^31331203201 is an apocalyptic number.

It is an amenable number.

31331203201 is a deficient number, since it is larger than the sum of its proper divisors (1888283303).

31331203201 is a wasteful number, since it uses less digits than its factorization.

31331203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515091.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31331203201 its reverse (10230213313), we get a palindrome (41561416514).

The spelling of 31331203201 in words is "thirty-one billion, three hundred thirty-one million, two hundred three thousand, two hundred one".