213966836931 has 8 divisors (see below), whose sum is σ = 285333794640. Its totient is φ = 142622218592.

The previous prime is 213966836917. The next prime is 213966836969. The reversal of 213966836931 is 139638669312.

It is a happy number.

213966836931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213966836931 - 2²² = 213962642627 is a prime.

It is a super-2 number, since 2×213966836931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213966836431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5562480 + ... + 5600813.

It is an arithmetic number, because the mean of its divisors is an integer number (35666724330).

Almost surely, 2^213966836931 is an apocalyptic number.

213966836931 is a deficient number, since it is larger than the sum of its proper divisors (71366957709).

213966836931 is a wasteful number, since it uses less digits than its factorization.

213966836931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11169685.

The product of its digits is 7558272, while the sum is 57.

The spelling of 213966836931 in words is "two hundred thirteen billion, nine hundred sixty-six million, eight hundred thirty-six thousand, nine hundred thirty-one".