31031130033 has 6 divisors (see below), whose sum is σ = 44822743394. Its totient is φ = 20687420016.

The previous prime is 31031130017. The next prime is 31031130059. The reversal of 31031130033 is 33003113013.

It can be written as a sum of positive squares in only one way, i.e., 24264915984 + 6766214049 = 155772^2 + 82257^2 .

It is not a de Polignac number, because 31031130033 - 2⁴ = 31031130017 is a prime.

It is a super-2 number, since 2×31031130033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31031129988 and 31031130015.

It is not an unprimeable number, because it can be changed into a prime (31031130083) 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, 1723951660 + ... + 1723951677.

Almost surely, 2^31031130033 is an apocalyptic number.

It is an amenable number.

31031130033 is a deficient number, since it is larger than the sum of its proper divisors (13791613361).

31031130033 is a wasteful number, since it uses less digits than its factorization.

31031130033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447903343 (or 3447903340 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

Adding to 31031130033 its reverse (33003113013), we get a palindrome (64034243046).

The spelling of 31031130033 in words is "thirty-one billion, thirty-one million, one hundred thirty thousand, thirty-three".