314285821 has 4 divisors (see below), whose sum is σ = 330827200. Its totient is φ = 297744444.

The previous prime is 314285773. The next prime is 314285837. The reversal of 314285821 is 128582413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 314285821 - 2¹⁵ = 314253053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (314285921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270661 + ... + 8270698.

It is an arithmetic number, because the mean of its divisors is an integer number (82706800).

Almost surely, 2^314285821 is an apocalyptic number.

It is an amenable number.

314285821 is a deficient number, since it is larger than the sum of its proper divisors (16541379).

314285821 is a wasteful number, since it uses less digits than its factorization.

314285821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541378.

The product of its digits is 15360, while the sum is 34.

The square root of 314285821 is about 17728.1082183069. The cubic root of 314285821 is about 679.8946066475.

It can be divided in two parts, 31428 and 5821, that added together give a square (37249 = 193²).

The spelling of 314285821 in words is "three hundred fourteen million, two hundred eighty-five thousand, eight hundred twenty-one".