431145330 has 128 divisors (see below), whose sum is σ = 1366087680. Its totient is φ = 84311040.

The previous prime is 431145329. The next prime is 431145343. The reversal of 431145330 is 33541134.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 431145330.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33781 + ... + 44759.

It is an arithmetic number, because the mean of its divisors is an integer number (10672560).

Almost surely, 2^431145330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431145330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683043840).

431145330 is an abundant number, since it is smaller than the sum of its proper divisors (934942350).

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

431145330 is a wasteful number, since it uses less digits than its factorization.

431145330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11024.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 431145330 is about 20764.0393469094. The cubic root of 431145330 is about 755.4537745522.

Adding to 431145330 its reverse (33541134), we get a palindrome (464686464).

The spelling of 431145330 in words is "four hundred thirty-one million, one hundred forty-five thousand, three hundred thirty".