216431631414 has 12 divisors (see below), whose sum is σ = 468935201436. Its totient is φ = 72143877132.

The previous prime is 216431631401. The next prime is 216431631499. The reversal of 216431631414 is 414136134612.

216431631414 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 3 + 1 + 631 + 4 + 14 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6011989744 + ... + 6011989779.

It is an arithmetic number, because the mean of its divisors is an integer number (39077933453).

Almost surely, 2^216431631414 is an apocalyptic number.

216431631414 is an abundant number, since it is smaller than the sum of its proper divisors (252503570022).

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

216431631414 is a wasteful number, since it uses less digits than its factorization.

216431631414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023979531 (or 12023979528 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 216431631414 in words is "two hundred sixteen billion, four hundred thirty-one million, six hundred thirty-one thousand, four hundred fourteen".