431234320 has 60 divisors (see below), whose sum is σ = 1102077900. Its totient is φ = 156808960.

The previous prime is 431234249. The next prime is 431234339. The reversal of 431234320 is 23432134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 104203264 + 327031056 = 10208^2 + 18084^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 431234291 and 431234300.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12595 + ... + 31954.

It is an arithmetic number, because the mean of its divisors is an integer number (18367965).

Almost surely, 2^431234320 is an apocalyptic number.

431234320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431234320 is an abundant number, since it is smaller than the sum of its proper divisors (670843580).

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

431234320 is a wasteful number, since it uses less digits than its factorization.

431234320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44584 (or 44567 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 431234320 is about 20766.1821238282. The cubic root of 431234320 is about 755.5057471331.

Adding to 431234320 its reverse (23432134), we get a palindrome (454666454).

The spelling of 431234320 in words is "four hundred thirty-one million, two hundred thirty-four thousand, three hundred twenty".