431420323 has 4 divisors (see below), whose sum is σ = 432700840. Its totient is φ = 430139808.

The previous prime is 431420321. The next prime is 431420357. The reversal of 431420323 is 323024134.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 431420323 - 2¹ = 431420321 is a prime.

It is a super-2 number, since 2×431420323² = 372246990194848658, 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 = 431420294 and 431420303.

It is not an unprimeable number, because it can be changed into a prime (431420321) 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, 639753 + ... + 640426.

It is an arithmetic number, because the mean of its divisors is an integer number (108175210).

Almost surely, 2^431420323 is an apocalyptic number.

431420323 is a deficient number, since it is larger than the sum of its proper divisors (1280517).

431420323 is a wasteful number, since it uses less digits than its factorization.

431420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280516.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 431420323 is about 20770.6601483920. The cubic root of 431420323 is about 755.6143548586.

Adding to 431420323 its reverse (323024134), we get a palindrome (754444457).

The spelling of 431420323 in words is "four hundred thirty-one million, four hundred twenty thousand, three hundred twenty-three".