33531300013 has 2 divisors, whose sum is σ = 33531300014. Its totient is φ = 33531300012.

The previous prime is 33531299999. The next prime is 33531300017. The reversal of 33531300013 is 31000313533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27242492809 + 6288807204 = 165053^2 + 79302^2 .

It is a cyclic number.

It is not a de Polignac number, because 33531300013 - 2¹³ = 33531291821 is a prime.

It is a super-2 number, since 2×33531300013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33531300017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16765650006 + 16765650007.

It is an arithmetic number, because the mean of its divisors is an integer number (16765650007).

Almost surely, 2^33531300013 is an apocalyptic number.

It is an amenable number.

33531300013 is a deficient number, since it is larger than the sum of its proper divisors (1).

33531300013 is an equidigital number, since it uses as much as digits as its factorization.

33531300013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 22.

Adding to 33531300013 its reverse (31000313533), we get a palindrome (64531613546).

The spelling of 33531300013 in words is "thirty-three billion, five hundred thirty-one million, three hundred thousand, thirteen".