431242405 has 8 divisors (see below), whose sum is σ = 564535584. Its totient is φ = 313630800.

The previous prime is 431242403. The next prime is 431242423. The reversal of 431242405 is 504242134.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431242405 - 2¹ = 431242403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431242405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431242403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3920331 + ... + 3920440.

It is an arithmetic number, because the mean of its divisors is an integer number (70566948).

Almost surely, 2^431242405 is an apocalyptic number.

It is an amenable number.

431242405 is a deficient number, since it is larger than the sum of its proper divisors (133293179).

431242405 is a wasteful number, since it uses less digits than its factorization.

431242405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7840787.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 431242405 is about 20766.3767903792. The cubic root of 431242405 is about 755.5104686387.

Adding to 431242405 its reverse (504242134), we get a palindrome (935484539).

The spelling of 431242405 in words is "four hundred thirty-one million, two hundred forty-two thousand, four hundred five".