431540634 has 32 divisors (see below), whose sum is σ = 987065856. Its totient is φ = 123211440.

The previous prime is 431540633. The next prime is 431540639. The reversal of 431540634 is 436045134.

It is not an unprimeable number, because it can be changed into a prime (431540633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80869 + ... + 86039.

It is an arithmetic number, because the mean of its divisors is an integer number (30845808).

Almost surely, 2^431540634 is an apocalyptic number.

431540634 is an abundant number, since it is smaller than the sum of its proper divisors (555525222).

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

431540634 is a wasteful number, since it uses less digits than its factorization.

431540634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7170.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 431540634 is about 20773.5561231100. The cubic root of 431540634 is about 755.6845881976.

Adding to 431540634 its reverse (436045134), we get a palindrome (867585768).

The spelling of 431540634 in words is "four hundred thirty-one million, five hundred forty thousand, six hundred thirty-four".