31080033 has 6 divisors (see below), whose sum is σ = 44893394. Its totient is φ = 20720016.

The previous prime is 31080031. The next prime is 31080041. The reversal of 31080033 is 33008013.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 4112784 = 5193^2 + 2028^2 .

It is not a de Polignac number, because 31080033 - 2¹ = 31080031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31079988 and 31080015.

It is not an unprimeable number, because it can be changed into a prime (31080031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1726660 + ... + 1726677.

Almost surely, 2^31080033 is an apocalyptic number.

It is an amenable number.

31080033 is a deficient number, since it is larger than the sum of its proper divisors (13813361).

31080033 is a wasteful number, since it uses less digits than its factorization.

31080033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453343 (or 3453340 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 31080033 is about 5574.9469055768. The cubic root of 31080033 is about 314.4081706887.

Adding to 31080033 its reverse (33008013), we get a palindrome (64088046).

The spelling of 31080033 in words is "thirty-one million, eighty thousand, thirty-three".