431301421 has 4 divisors (see below), whose sum is σ = 432331200. Its totient is φ = 430271644.

The previous prime is 431301389. The next prime is 431301433. The reversal of 431301421 is 124103134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124103134 = 2 ⋅62051567.

It is a cyclic number.

It is not a de Polignac number, because 431301421 - 2⁵ = 431301389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431301721) 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, 514261 + ... + 515098.

It is an arithmetic number, because the mean of its divisors is an integer number (108082800).

Almost surely, 2^431301421 is an apocalyptic number.

It is an amenable number.

431301421 is a deficient number, since it is larger than the sum of its proper divisors (1029779).

431301421 is a wasteful number, since it uses less digits than its factorization.

431301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029778.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 431301421 is about 20767.7976925817. The cubic root of 431301421 is about 755.5449312143.

Adding to 431301421 its reverse (124103134), we get a palindrome (555404555).

It can be divided in two parts, 43130 and 1421, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 431301421 in words is "four hundred thirty-one million, three hundred one thousand, four hundred twenty-one".