431512045 has 4 divisors (see below), whose sum is σ = 517814460. Its totient is φ = 345209632.

The previous prime is 431512043. The next prime is 431512049. The reversal of 431512045 is 540215134.

It is a happy number.

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 224670121 + 206841924 = 14989^2 + 14382^2 .

It is a cyclic number.

It is not a de Polignac number, because 431512045 - 2¹ = 431512043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431512043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43151200 + ... + 43151209.

It is an arithmetic number, because the mean of its divisors is an integer number (129453615).

Almost surely, 2^431512045 is an apocalyptic number.

It is an amenable number.

431512045 is a deficient number, since it is larger than the sum of its proper divisors (86302415).

431512045 is an equidigital number, since it uses as much as digits as its factorization.

431512045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86302414.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 431512045 is about 20772.8680013136. The cubic root of 431512045 is about 755.6679001254.

Adding to 431512045 its reverse (540215134), we get a palindrome (971727179).

The spelling of 431512045 in words is "four hundred thirty-one million, five hundred twelve thousand, forty-five".