31066676869 has 4 divisors (see below), whose sum is σ = 31067365420. Its totient is φ = 31065988320.

The previous prime is 31066676857. The next prime is 31066676873. The reversal of 31066676869 is 96867666013.

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 17308559844 + 13758117025 = 131562^2 + 117295^2 .

It is a cyclic number.

It is not a de Polignac number, because 31066676869 - 2²¹ = 31064579717 is a prime.

It is a super-2 number, since 2×31066676869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31066626869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271464 + ... + 368545.

It is an arithmetic number, because the mean of its divisors is an integer number (7766841355).

Almost surely, 2^31066676869 is an apocalyptic number.

It is an amenable number.

31066676869 is a deficient number, since it is larger than the sum of its proper divisors (688551).

31066676869 is an equidigital number, since it uses as much as digits as its factorization.

31066676869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688550.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 31066676869 in words is "thirty-one billion, sixty-six million, six hundred seventy-six thousand, eight hundred sixty-nine".