206525431 has 8 divisors (see below), whose sum is σ = 241518464. Its totient is φ = 172904760.

The previous prime is 206525413. The next prime is 206525437. The reversal of 206525431 is 134525602.

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

It is not a de Polignac number, because 206525431 - 2¹⁹ = 206001143 is a prime.

It is a super-2 number, since 2×206525431² = 85305507299471522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206525431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206525437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342765 + ... + 343366.

It is an arithmetic number, because the mean of its divisors is an integer number (30189808).

Almost surely, 2^206525431 is an apocalyptic number.

206525431 is a deficient number, since it is larger than the sum of its proper divisors (34993033).

206525431 is an equidigital number, since it uses as much as digits as its factorization.

206525431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686181.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 206525431 is about 14370.9926936172. The cubic root of 206525431 is about 591.0957621896.

The spelling of 206525431 in words is "two hundred six million, five hundred twenty-five thousand, four hundred thirty-one".