431413421 has 4 divisors (see below), whose sum is σ = 431557152. Its totient is φ = 431269692.

The previous prime is 431413393. The next prime is 431413447. The reversal of 431413421 is 124314134.

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.

It is a cyclic number.

It is not a de Polignac number, because 431413421 - 2¹⁴ = 431397037 is a prime.

It is a super-2 number, since 2×431413421² = 372235079637846482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431415421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67265 + ... + 73398.

It is an arithmetic number, because the mean of its divisors is an integer number (107889288).

Almost surely, 2^431413421 is an apocalyptic number.

It is an amenable number.

431413421 is a deficient number, since it is larger than the sum of its proper divisors (143731).

431413421 is a wasteful number, since it uses less digits than its factorization.

431413421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143730.

The product of its digits is 1152, while the sum is 23.

The square root of 431413421 is about 20770.4939999028. The cubic root of 431413421 is about 755.6103253173.

Adding to 431413421 its reverse (124314134), we get a palindrome (555727555).

The spelling of 431413421 in words is "four hundred thirty-one million, four hundred thirteen thousand, four hundred twenty-one".