31313134033 has 4 divisors (see below), whose sum is σ = 31397083828. Its totient is φ = 31229184240.

The previous prime is 31313134009. The next prime is 31313134049. The reversal of 31313134033 is 33043131313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9150261649 + 22162872384 = 95657^2 + 148872^2 .

It is a cyclic number.

It is not a de Polignac number, because 31313134033 - 2¹⁷ = 31313002961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31313133989 and 31313134007.

It is not an unprimeable number, because it can be changed into a prime (31313138033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41974338 + ... + 41975083.

It is an arithmetic number, because the mean of its divisors is an integer number (7849270957).

Almost surely, 2^31313134033 is an apocalyptic number.

It is an amenable number.

31313134033 is a deficient number, since it is larger than the sum of its proper divisors (83949795).

31313134033 is an equidigital number, since it uses as much as digits as its factorization.

31313134033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83949794.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31313134033 its reverse (33043131313), we get a palindrome (64356265346).

The spelling of 31313134033 in words is "thirty-one billion, three hundred thirteen million, one hundred thirty-four thousand, thirty-three".