3431216440 has 32 divisors (see below), whose sum is σ = 7796684160. Its totient is φ = 1358896000.

The previous prime is 3431216419. The next prime is 3431216447. The reversal of 3431216440 is 446121343.

It is a junction number, because it is equal to n+sod(n) for n = 3431216399 and 3431216408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431216447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 420616 + ... + 428695.

It is an arithmetic number, because the mean of its divisors is an integer number (243646380).

Almost surely, 2^3431216440 is an apocalyptic number.

It is an amenable number.

3431216440 is an abundant number, since it is smaller than the sum of its proper divisors (4365467720).

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

3431216440 is a wasteful number, since it uses less digits than its factorization.

3431216440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849423 (or 849419 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 3431216440 is about 58576.5861074201. The cubic root of 3431216440 is about 1508.2825436198.

Adding to 3431216440 its reverse (446121343), we get a palindrome (3877337783).

The spelling of 3431216440 in words is "three billion, four hundred thirty-one million, two hundred sixteen thousand, four hundred forty".