521314312 has 32 divisors (see below), whose sum is σ = 1013688000. Its totient is φ = 251135424.

The previous prime is 521314301. The next prime is 521314319. The reversal of 521314312 is 213413125.

It is a happy number.

It is a super-2 number, since 2×521314312² = 543537223792066688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521314319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21939 + ... + 39037.

It is an arithmetic number, because the mean of its divisors is an integer number (31677750).

Almost surely, 2^521314312 is an apocalyptic number.

It is an amenable number.

521314312 is a deficient number, since it is larger than the sum of its proper divisors (492373688).

521314312 is a wasteful number, since it uses less digits than its factorization.

521314312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17245 (or 17241 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 521314312 is about 22832.3085122815. The cubic root of 521314312 is about 804.8220801963.

Adding to 521314312 its reverse (213413125), we get a palindrome (734727437).

The spelling of 521314312 in words is "five hundred twenty-one million, three hundred fourteen thousand, three hundred twelve".