206051431 has 8 divisors (see below), whose sum is σ = 210757824. Its totient is φ = 201358560.

The previous prime is 206051393. The next prime is 206051449. The reversal of 206051431 is 134150602.

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 206051431 - 2⁷ = 206051303 is a prime.

It is a super-2 number, since 2×206051431² = 84914384434295522, which 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 (206051231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31461 + ... + 37441.

It is an arithmetic number, because the mean of its divisors is an integer number (26344728).

Almost surely, 2^206051431 is an apocalyptic number.

206051431 is a deficient number, since it is larger than the sum of its proper divisors (4706393).

206051431 is an equidigital number, since it uses as much as digits as its factorization.

206051431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 206051431 is about 14354.4916663740. The cubic root of 206051431 is about 590.6432045041.

The spelling of 206051431 in words is "two hundred six million, fifty-one thousand, four hundred thirty-one".