431022145 has 4 divisors (see below), whose sum is σ = 517226580. Its totient is φ = 344817712.

The previous prime is 431022133. The next prime is 431022169. The reversal of 431022145 is 541220134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70174129 + 360848016 = 8377^2 + 18996^2 .

It is a cyclic number.

It is not a de Polignac number, because 431022145 - 2⁷ = 431022017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43102210 + ... + 43102219.

It is an arithmetic number, because the mean of its divisors is an integer number (129306645).

Almost surely, 2^431022145 is an apocalyptic number.

It is an amenable number.

431022145 is a deficient number, since it is larger than the sum of its proper divisors (86204435).

431022145 is an equidigital number, since it uses as much as digits as its factorization.

431022145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86204434.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 431022145 is about 20761.0728287341. The cubic root of 431022145 is about 755.3818193582.

Adding to 431022145 its reverse (541220134), we get a palindrome (972242279).

The spelling of 431022145 in words is "four hundred thirty-one million, twenty-two thousand, one hundred forty-five".