206971383 has 4 divisors (see below), whose sum is σ = 275961848. Its totient is φ = 137980920.

The previous prime is 206971381. The next prime is 206971397. The reversal of 206971383 is 383179602.

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

It is not a de Polignac number, because 206971383 - 2¹ = 206971381 is a prime.

It is the 14387-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206971381) by changing a digit.

It is a nontrivial repunit in base 14386.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34495228 + ... + 34495233.

It is an arithmetic number, because the mean of its divisors is an integer number (68990462).

Almost surely, 2^206971383 is an apocalyptic number.

206971383 is a deficient number, since it is larger than the sum of its proper divisors (68990465).

206971383 is an equidigital number, since it uses as much as digits as its factorization.

206971383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68990464.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 206971383 is about 14386.5000260661. The cubic root of 206971383 is about 591.5209089167.

The spelling of 206971383 in words is "two hundred six million, nine hundred seventy-one thousand, three hundred eighty-three".