33000031013 has 4 divisors (see below), whose sum is σ = 33033131340. Its totient is φ = 32966930688.

The previous prime is 33000031007. The next prime is 33000031037. The reversal of 33000031013 is 31013000033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31013000033 = 439 ⋅70644647.

It can be written as a sum of positive squares in 2 ways, for example, as 15351705604 + 17648325409 = 123902^2 + 132847^2 .

It is a cyclic number.

It is not a de Polignac number, because 33000031013 - 2¹⁰ = 33000029989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33000031213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16548668 + ... + 16550661.

It is an arithmetic number, because the mean of its divisors is an integer number (8258282835).

Almost surely, 2^33000031013 is an apocalyptic number.

It is an amenable number.

33000031013 is a deficient number, since it is larger than the sum of its proper divisors (33100327).

33000031013 is an equidigital number, since it uses as much as digits as its factorization.

33000031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33100326.

The product of its (nonzero) digits is 81, while the sum is 14.

Adding to 33000031013 its reverse (31013000033), we get a palindrome (64013031046).

The spelling of 33000031013 in words is "thirty-three billion, thirty-one thousand, thirteen".