201231320213333 has 8 divisors (see below), whose sum is σ = 206140088610456. Its totient is φ = 196322584550400.

The previous prime is 201231320213327. The next prime is 201231320213359. The reversal of 201231320213333 is 333312023132102.

It can be written as a sum of positive squares in 4 ways, for example, as 29521081489 + 201201799131844 = 171817^2 + 14184562^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201231320213333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201231320213296 and 201231320213305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231340213333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4498085 + ... + 20559557.

It is an arithmetic number, because the mean of its divisors is an integer number (25767511076307).

Almost surely, 2^{201231320213333} is an apocalyptic number.

It is an amenable number.

201231320213333 is a deficient number, since it is larger than the sum of its proper divisors (4908768397123).

201231320213333 is a wasteful number, since it uses less digits than its factorization.

201231320213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16367095.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 201231320213333 its reverse (333312023132102), we get a palindrome (534543343345435).

The spelling of 201231320213333 in words is "two hundred one trillion, two hundred thirty-one billion, three hundred twenty million, two hundred thirteen thousand, three hundred thirty-three".