431606140 has 24 divisors (see below), whose sum is σ = 1035855072. Its totient is φ = 147979200.

The previous prime is 431606137. The next prime is 431606143. The reversal of 431606140 is 41606134.

It is an interprime number because it is at equal distance from previous prime (431606137) and next prime (431606143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431606143) 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 7 ways as a sum of consecutive naturals, for example, 1541311 + ... + 1541590.

It is an arithmetic number, because the mean of its divisors is an integer number (43160628).

Almost surely, 2^431606140 is an apocalyptic number.

It is an amenable number.

431606140 is an abundant number, since it is smaller than the sum of its proper divisors (604248932).

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

431606140 is a wasteful number, since it uses less digits than its factorization.

431606140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082917 (or 3082915 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 431606140 is about 20775.1327312246. The cubic root of 431606140 is about 755.7228228127.

The spelling of 431606140 in words is "four hundred thirty-one million, six hundred six thousand, one hundred forty".