431530823 has 8 divisors (see below), whose sum is σ = 441961488. Its totient is φ = 421185024.

The previous prime is 431530811. The next prime is 431530871. The reversal of 431530823 is 328035134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431530823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431530123) 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, 10865 + ... + 31322.

It is an arithmetic number, because the mean of its divisors is an integer number (55245186).

Almost surely, 2^431530823 is an apocalyptic number.

431530823 is a deficient number, since it is larger than the sum of its proper divisors (10430665).

431530823 is a wasteful number, since it uses less digits than its factorization.

431530823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42433.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 431530823 is about 20773.3199802054. The cubic root of 431530823 is about 755.6788613690.

Adding to 431530823 its reverse (328035134), we get a palindrome (759565957).

The spelling of 431530823 in words is "four hundred thirty-one million, five hundred thirty thousand, eight hundred twenty-three".