518312214 has 24 divisors (see below), whose sum is σ = 1283440080. Its totient is φ = 148089168.

The previous prime is 518312209. The next prime is 518312233. The reversal of 518312214 is 412213815.

It is a Curzon number.

It is a congruent number.

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, 2056669 + ... + 2056920.

It is an arithmetic number, because the mean of its divisors is an integer number (53476670).

Almost surely, 2^518312214 is an apocalyptic number.

518312214 is an abundant number, since it is smaller than the sum of its proper divisors (765127866).

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

518312214 is a wasteful number, since it uses less digits than its factorization.

518312214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113604 (or 4113601 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 518312214 is about 22766.4712680731. The cubic root of 518312214 is about 803.2741927541.

It can be divided in two parts, 51831 and 2214, that added together give a palindrome (54045).

The spelling of 518312214 in words is "five hundred eighteen million, three hundred twelve thousand, two hundred fourteen".