431404431 has 16 divisors (see below), whose sum is σ = 585137280. Its totient is φ = 282679200.

The previous prime is 431404409. The next prime is 431404469. The reversal of 431404431 is 134404134.

It is not a de Polignac number, because 431404431 - 2¹¹ = 431402383 is a prime.

It is a super-2 number, since 2×431404431² = 372219566172867522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431404331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36996 + ... + 47238.

It is an arithmetic number, because the mean of its divisors is an integer number (36571080).

Almost surely, 2^431404431 is an apocalyptic number.

431404431 is a deficient number, since it is larger than the sum of its proper divisors (153732849).

431404431 is a wasteful number, since it uses less digits than its factorization.

431404431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 431404431 is about 20770.2775860122. The cubic root of 431404431 is about 755.6050766906.

Adding to 431404431 its reverse (134404134), we get a palindrome (565808565).

The spelling of 431404431 in words is "four hundred thirty-one million, four hundred four thousand, four hundred thirty-one".