431140206 has 64 divisors (see below), whose sum is σ = 1016040960. Its totient is φ = 119387520.

The previous prime is 431140159. The next prime is 431140207. The reversal of 431140206 is 602041134.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431140207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653905 + ... + 654563.

It is an arithmetic number, because the mean of its divisors is an integer number (15875640).

Almost surely, 2^431140206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431140206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508020480).

431140206 is an abundant number, since it is smaller than the sum of its proper divisors (584900754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431140206 is a wasteful number, since it uses less digits than its factorization.

431140206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 431140206 is about 20763.9159601459. The cubic root of 431140206 is about 755.4507817791.

The spelling of 431140206 in words is "four hundred thirty-one million, one hundred forty thousand, two hundred six".