521214323 has 12 divisors (see below), whose sum is σ = 607376952. Its totient is φ = 445969440.

The previous prime is 521214311. The next prime is 521214329. The reversal of 521214323 is 323412125.

It is not a de Polignac number, because 521214323 - 2¹² = 521210227 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (521214329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19703 + ... + 37823.

It is an arithmetic number, because the mean of its divisors is an integer number (50614746).

Almost surely, 2^521214323 is an apocalyptic number.

521214323 is a deficient number, since it is larger than the sum of its proper divisors (86162629).

521214323 is a wasteful number, since it uses less digits than its factorization.

521214323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18722 (or 18715 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 521214323 is about 22830.1187688544. The cubic root of 521214323 is about 804.7706214771.

Adding to 521214323 its reverse (323412125), we get a palindrome (844626448).

The spelling of 521214323 in words is "five hundred twenty-one million, two hundred fourteen thousand, three hundred twenty-three".