31783068353 has 4 divisors (see below), whose sum is σ = 31824833988. Its totient is φ = 31741302720.

The previous prime is 31783068299. The next prime is 31783068367. The reversal of 31783068353 is 35386038713.

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 774675889 + 31008392464 = 27833^2 + 176092^2 .

It is a cyclic number.

It is not a de Polignac number, because 31783068353 - 2¹⁴ = 31783051969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31783068298 and 31783068307.

It is not an unprimeable number, because it can be changed into a prime (31783064353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20881676 + ... + 20883197.

It is an arithmetic number, because the mean of its divisors is an integer number (7956208497).

Almost surely, 2^31783068353 is an apocalyptic number.

It is an amenable number.

31783068353 is a deficient number, since it is larger than the sum of its proper divisors (41765635).

31783068353 is an equidigital number, since it uses as much as digits as its factorization.

31783068353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41765634.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 31783068353 in words is "thirty-one billion, seven hundred eighty-three million, sixty-eight thousand, three hundred fifty-three".