431452521 has 8 divisors (see below), whose sum is σ = 639188960. Its totient is φ = 287634996.

The previous prime is 431452519. The next prime is 431452529. The reversal of 431452521 is 125254134.

It is not a de Polignac number, because 431452521 - 2¹ = 431452519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15979723 = 431452521 / (4 + 3 + 1 + 4 + 5 + 2 + 5 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431452529) 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 7 ways as a sum of consecutive naturals, for example, 7989835 + ... + 7989888.

It is an arithmetic number, because the mean of its divisors is an integer number (79898620).

Almost surely, 2^431452521 is an apocalyptic number.

It is an amenable number.

431452521 is a deficient number, since it is larger than the sum of its proper divisors (207736439).

431452521 is a wasteful number, since it uses less digits than its factorization.

431452521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15979732 (or 15979726 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 431452521 is about 20771.4352176252. The cubic root of 431452521 is about 755.6331522004.

The spelling of 431452521 in words is "four hundred thirty-one million, four hundred fifty-two thousand, five hundred twenty-one".