431306252 has 48 divisors (see below), whose sum is σ = 866053440. Its totient is φ = 187289856.

The previous prime is 431306243. The next prime is 431306279. The reversal of 431306252 is 252603134.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147953 + ... + 150839.

It is an arithmetic number, because the mean of its divisors is an integer number (18042780).

Almost surely, 2^431306252 is an apocalyptic number.

It is an amenable number.

431306252 is an abundant number, since it is smaller than the sum of its proper divisors (434747188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431306252 is a wasteful number, since it uses less digits than its factorization.

431306252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 431306252 is about 20767.9140021332. The cubic root of 431306252 is about 755.5477521525.

Adding to 431306252 its reverse (252603134), we get a palindrome (683909386).

The spelling of 431306252 in words is "four hundred thirty-one million, three hundred six thousand, two hundred fifty-two".