431342431 has 4 divisors (see below), whose sum is σ = 464522632. Its totient is φ = 398162232.

The previous prime is 431342393. The next prime is 431342441. The reversal of 431342431 is 134243134.

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

It is not a de Polignac number, because 431342431 - 2¹¹ = 431340383 is a prime.

It is a super-2 number, since 2×431342431² = 372112585561979522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431342396 and 431342405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431342441) 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, 16590081 + ... + 16590106.

It is an arithmetic number, because the mean of its divisors is an integer number (116130658).

Almost surely, 2^431342431 is an apocalyptic number.

431342431 is a deficient number, since it is larger than the sum of its proper divisors (33180201).

431342431 is a wasteful number, since it uses less digits than its factorization.

431342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33180200.

The product of its digits is 3456, while the sum is 25.

The square root of 431342431 is about 20768.7850150171. The cubic root of 431342431 is about 755.5688772794.

Adding to 431342431 its reverse (134243134), we get a palindrome (565585565).

The spelling of 431342431 in words is "four hundred thirty-one million, three hundred forty-two thousand, four hundred thirty-one".