431142445 has 4 divisors (see below), whose sum is σ = 517370940. Its totient is φ = 344913952.

The previous prime is 431142427. The next prime is 431142461. The reversal of 431142445 is 544241134.

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 135233641 + 295908804 = 11629^2 + 17202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431142445 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, 43114240 + ... + 43114249.

It is an arithmetic number, because the mean of its divisors is an integer number (129342735).

Almost surely, 2^431142445 is an apocalyptic number.

It is an amenable number.

431142445 is a deficient number, since it is larger than the sum of its proper divisors (86228495).

431142445 is an equidigital number, since it uses as much as digits as its factorization.

431142445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86228494.

The product of its digits is 7680, while the sum is 28.

The square root of 431142445 is about 20763.9698757246. The cubic root of 431142445 is about 755.4520895140.

Adding to 431142445 its reverse (544241134), we get a palindrome (975383579).

The spelling of 431142445 in words is "four hundred thirty-one million, one hundred forty-two thousand, four hundred forty-five".