431540323 has 8 divisors (see below), whose sum is σ = 446035968. Its totient is φ = 417266184.

The previous prime is 431540321. The next prime is 431540327. The reversal of 431540323 is 323045134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431540323 - 2¹ = 431540321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431540321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51411 + ... + 59212.

It is an arithmetic number, because the mean of its divisors is an integer number (55754496).

Almost surely, 2^431540323 is an apocalyptic number.

431540323 is a deficient number, since it is larger than the sum of its proper divisors (14495645).

431540323 is a wasteful number, since it uses less digits than its factorization.

431540323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110753.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 431540323 is about 20773.5486376305. The cubic root of 431540323 is about 755.6844066635.

Adding to 431540323 its reverse (323045134), we get a palindrome (754585457).

The spelling of 431540323 in words is "four hundred thirty-one million, five hundred forty thousand, three hundred twenty-three".