431340005 has 16 divisors (see below), whose sum is σ = 523635840. Its totient is φ = 341068992.

The previous prime is 431339977. The next prime is 431340047. The reversal of 431340005 is 500043134.

It is a cyclic number.

It is not a de Polignac number, because 431340005 - 2⁶ = 431339941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388391 + ... + 389499.

It is an arithmetic number, because the mean of its divisors is an integer number (32727240).

Almost surely, 2^431340005 is an apocalyptic number.

It is an amenable number.

431340005 is a deficient number, since it is larger than the sum of its proper divisors (92295835).

431340005 is a wasteful number, since it uses less digits than its factorization.

431340005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 431340005 is about 20768.7266099778. The cubic root of 431340005 is about 755.5674607609.

Adding to 431340005 its reverse (500043134), we get a palindrome (931383139).

The spelling of 431340005 in words is "four hundred thirty-one million, three hundred forty thousand, five".