206412331 has 4 divisors (see below), whose sum is σ = 207063792. Its totient is φ = 205760872.

The previous prime is 206412313. The next prime is 206412361. The reversal of 206412331 is 133214602.

206412331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 206412331 - 2¹¹ = 206410283 is a prime.

It is a super-2 number, since 2×206412331² = 85212100777707122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206412361) 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, 325255 + ... + 325888.

It is an arithmetic number, because the mean of its divisors is an integer number (51765948).

Almost surely, 2^206412331 is an apocalyptic number.

206412331 is a deficient number, since it is larger than the sum of its proper divisors (651461).

206412331 is an equidigital number, since it uses as much as digits as its factorization.

206412331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651460.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 206412331 is about 14367.0571447322. The cubic root of 206412331 is about 590.9878414399.

Adding to 206412331 its reverse (133214602), we get a palindrome (339626933).

The spelling of 206412331 in words is "two hundred six million, four hundred twelve thousand, three hundred thirty-one".