431213320 has 16 divisors (see below), whose sum is σ = 970230060. Its totient is φ = 172485312.

The previous prime is 431213221. The next prime is 431213329. The reversal of 431213320 is 23312134.

It can be written as a sum of positive squares in 2 ways, for example, as 376127236 + 55086084 = 19394^2 + 7422^2 .

It is a super-3 number, since 3×431213320³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (431213329) 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, 5390127 + ... + 5390206.

Almost surely, 2^431213320 is an apocalyptic number.

431213320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431213320 is an abundant number, since it is smaller than the sum of its proper divisors (539016740).

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

431213320 is a wasteful number, since it uses less digits than its factorization.

431213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780344 (or 10780340 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 431213320 is about 20765.6764878970. The cubic root of 431213320 is about 755.4934832064.

Adding to 431213320 its reverse (23312134), we get a palindrome (454525454).

The spelling of 431213320 in words is "four hundred thirty-one million, two hundred thirteen thousand, three hundred twenty".