31223314331201 has 4 divisors (see below), whose sum is σ = 31244803193172. Its totient is φ = 31201825469232.

The previous prime is 31223314331197. The next prime is 31223314331227. The reversal of 31223314331201 is 10213341332213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30755054684176 + 468259647025 = 5545724^2 + 684295^2 .

It is a cyclic number.

It is not a de Polignac number, because 31223314331201 - 2² = 31223314331197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223314331281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10744428806 + ... + 10744431711.

It is an arithmetic number, because the mean of its divisors is an integer number (7811200798293).

Almost surely, 2^{31223314331201} is an apocalyptic number.

It is an amenable number.

31223314331201 is a deficient number, since it is larger than the sum of its proper divisors (21488861971).

31223314331201 is a wasteful number, since it uses less digits than its factorization.

31223314331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21488861970.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 31223314331201 its reverse (10213341332213), we get a palindrome (41436655663414).

The spelling of 31223314331201 in words is "thirty-one trillion, two hundred twenty-three billion, three hundred fourteen million, three hundred thirty-one thousand, two hundred one".