33131200213 has 2 divisors, whose sum is σ = 33131200214. Its totient is φ = 33131200212.

The previous prime is 33131200181. The next prime is 33131200273. The reversal of 33131200213 is 31200213133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19419258609 + 13711941604 = 139353^2 + 117098^2 .

It is a cyclic number.

It is not a de Polignac number, because 33131200213 - 2⁵ = 33131200181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33131200273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565600106 + 16565600107.

It is an arithmetic number, because the mean of its divisors is an integer number (16565600107).

Almost surely, 2^33131200213 is an apocalyptic number.

It is an amenable number.

33131200213 is a deficient number, since it is larger than the sum of its proper divisors (1).

33131200213 is an equidigital number, since it uses as much as digits as its factorization.

33131200213 is an evil number, because the sum of its binary digits is even.

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

Adding to 33131200213 its reverse (31200213133), we get a palindrome (64331413346).

The spelling of 33131200213 in words is "thirty-three billion, one hundred thirty-one million, two hundred thousand, two hundred thirteen".