521681314 has 16 divisors (see below), whose sum is σ = 975612096. Its totient is φ = 203252400.

The previous prime is 521681297. The next prime is 521681353. The reversal of 521681314 is 413186125.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693617 + ... + 1693924.

It is an arithmetic number, because the mean of its divisors is an integer number (60975756).

Almost surely, 2^521681314 is an apocalyptic number.

521681314 is a deficient number, since it is larger than the sum of its proper divisors (453930782).

521681314 is a wasteful number, since it uses less digits than its factorization.

521681314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387561.

The product of its digits is 5760, while the sum is 31.

The square root of 521681314 is about 22840.3439991608. The cubic root of 521681314 is about 805.0108991233.

The spelling of 521681314 in words is "five hundred twenty-one million, six hundred eighty-one thousand, three hundred fourteen".