431243045 has 4 divisors (see below), whose sum is σ = 517491660. Its totient is φ = 344994432.

The previous prime is 431243039. The next prime is 431243051. The reversal of 431243045 is 540342134.

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

It is an interprime number because it is at equal distance from previous prime (431243039) and next prime (431243051).

It can be written as a sum of positive squares in 2 ways, for example, as 54184321 + 377058724 = 7361^2 + 19418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431243045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43124300 + ... + 43124309.

It is an arithmetic number, because the mean of its divisors is an integer number (129372915).

Almost surely, 2^431243045 is an apocalyptic number.

It is an amenable number.

431243045 is a deficient number, since it is larger than the sum of its proper divisors (86248615).

431243045 is an equidigital number, since it uses as much as digits as its factorization.

431243045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86248614.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 431243045 is about 20766.3921998984. The cubic root of 431243045 is about 755.5108423855.

Adding to 431243045 its reverse (540342134), we get a palindrome (971585179).

The spelling of 431243045 in words is "four hundred thirty-one million, two hundred forty-three thousand, forty-five".