33131204413 has 2 divisors, whose sum is σ = 33131204414. Its totient is φ = 33131204412.

The previous prime is 33131204401. The next prime is 33131204441. The reversal of 33131204413 is 31440213133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30099821049 + 3031383364 = 173493^2 + 55058^2 .

It is a cyclic number.

It is not a de Polignac number, because 33131204413 - 2³³ = 24541269821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33131202413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565602206 + 16565602207.

It is an arithmetic number, because the mean of its divisors is an integer number (16565602207).

Almost surely, 2^33131204413 is an apocalyptic number.

It is an amenable number.

33131204413 is a deficient number, since it is larger than the sum of its proper divisors (1).

33131204413 is an equidigital number, since it uses as much as digits as its factorization.

33131204413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 33131204413 its reverse (31440213133), we get a palindrome (64571417546).

The spelling of 33131204413 in words is "thirty-three billion, one hundred thirty-one million, two hundred four thousand, four hundred thirteen".