431234340 has 48 divisors (see below), whose sum is σ = 1210175232. Its totient is φ = 114736896.

The previous prime is 431234339. The next prime is 431234369. The reversal of 431234340 is 43432134.

It is a self number, because there is not a number n which added to its sum of digits gives 431234340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19557 + ... + 35283.

It is an arithmetic number, because the mean of its divisors is an integer number (25211984).

Almost surely, 2^431234340 is an apocalyptic number.

It is an amenable number.

431234340 is an abundant number, since it is smaller than the sum of its proper divisors (778940892).

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

431234340 is a wasteful number, since it uses less digits than its factorization.

431234340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16196 (or 16194 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 431234340 is about 20766.1826053803. The cubic root of 431234340 is about 755.5057588128.

Adding to 431234340 its reverse (43432134), we get a palindrome (474666474).

The spelling of 431234340 in words is "four hundred thirty-one million, two hundred thirty-four thousand, three hundred forty".