431463421 has 4 divisors (see below), whose sum is σ = 446341500. Its totient is φ = 416585344.

The previous prime is 431463413. The next prime is 431463433. The reversal of 431463421 is 124364134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368832025 + 62631396 = 19205^2 + 7914^2 .

It is a cyclic number.

It is not a de Polignac number, because 431463421 - 2³ = 431463413 is a prime.

It is a super-2 number, since 2×431463421² = 372321367322046482, which contains 22 as substring.

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 431463421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431463121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7438996 + ... + 7439053.

It is an arithmetic number, because the mean of its divisors is an integer number (111585375).

Almost surely, 2^431463421 is an apocalyptic number.

It is an amenable number.

431463421 is a deficient number, since it is larger than the sum of its proper divisors (14878079).

431463421 is a wasteful number, since it uses less digits than its factorization.

431463421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14878078.

The product of its digits is 6912, while the sum is 28.

The square root of 431463421 is about 20771.6975955265. The cubic root of 431463421 is about 755.6395154591.

The spelling of 431463421 in words is "four hundred thirty-one million, four hundred sixty-three thousand, four hundred twenty-one".