431640612 has 36 divisors (see below), whose sum is σ = 1175022940. Its totient is φ = 132812352.

The previous prime is 431640607. The next prime is 431640619. The reversal of 431640612 is 216046134.

431640612 is a `hidden beast` number, since 4 + 3 + 1 + 6 + 40 + 612 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 98724096 + 332916516 = 9936^2 + 18246^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (431640619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460687 + ... + 461622.

Almost surely, 2^431640612 is an apocalyptic number.

It is an amenable number.

431640612 is an abundant number, since it is smaller than the sum of its proper divisors (743382328).

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

431640612 is a wasteful number, since it uses less digits than its factorization.

431640612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922332 (or 922327 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 431640612 is about 20775.9623603818. The cubic root of 431640612 is about 755.7429419145.

Adding to 431640612 its reverse (216046134), we get a palindrome (647686746).

The spelling of 431640612 in words is "four hundred thirty-one million, six hundred forty thousand, six hundred twelve".