431520245 has 8 divisors (see below), whose sum is σ = 557657016. Its totient is φ = 318661056.

The previous prime is 431520211. The next prime is 431520247. The reversal of 431520245 is 542025134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75933796 + 355586449 = 8714^2 + 18857^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 431520245 - 2⁸ = 431519989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431520247) 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, 3319322 + ... + 3319451.

It is an arithmetic number, because the mean of its divisors is an integer number (69707127).

Almost surely, 2^431520245 is an apocalyptic number.

It is an amenable number.

431520245 is a deficient number, since it is larger than the sum of its proper divisors (126136771).

431520245 is a wasteful number, since it uses less digits than its factorization.

431520245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638791.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 431520245 is about 20773.0653732183. The cubic root of 431520245 is about 755.6726867338.

Adding to 431520245 its reverse (542025134), we get a palindrome (973545379).

The spelling of 431520245 in words is "four hundred thirty-one million, five hundred twenty thousand, two hundred forty-five".