431240455 has 16 divisors (see below), whose sum is σ = 540587520. Its totient is φ = 329626528.

The previous prime is 431240449. The next prime is 431240483. The reversal of 431240455 is 554042134.

It is a cyclic number.

It is not a de Polignac number, because 431240455 - 2¹¹ = 431238407 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, 150264 + ... + 153106.

It is an arithmetic number, because the mean of its divisors is an integer number (33786720).

Almost surely, 2^431240455 is an apocalyptic number.

431240455 is a deficient number, since it is larger than the sum of its proper divisors (109347065).

431240455 is a wasteful number, since it uses less digits than its factorization.

431240455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 431240455 is about 20766.3298394300. The cubic root of 431240455 is about 755.5093298765.

Adding to 431240455 its reverse (554042134), we get a palindrome (985282589).

The spelling of 431240455 in words is "four hundred thirty-one million, two hundred forty thousand, four hundred fifty-five".