431321252 has 12 divisors (see below), whose sum is σ = 755339760. Its totient is φ = 215509896.

The previous prime is 431321251. The next prime is 431321269. The reversal of 431321252 is 252123134.

It is not an unprimeable number, because it can be changed into a prime (431321251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31118 + ... + 42789.

It is an arithmetic number, because the mean of its divisors is an integer number (62944980).

Almost surely, 2^431321252 is an apocalyptic number.

It is an amenable number.

431321252 is a deficient number, since it is larger than the sum of its proper divisors (324018508).

431321252 is a wasteful number, since it uses less digits than its factorization.

431321252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75370 (or 75368 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 431321252 is about 20768.2751330003. The cubic root of 431321252 is about 755.5565108824.

Adding to 431321252 its reverse (252123134), we get a palindrome (683444386).

The spelling of 431321252 in words is "four hundred thirty-one million, three hundred twenty-one thousand, two hundred fifty-two".