314213021 has 4 divisors (see below), whose sum is σ = 315622272. Its totient is φ = 312803772.

The previous prime is 314212967. The next prime is 314213041. The reversal of 314213021 is 120312413.

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 a de Polignac number, because none of the positive numbers 2^k-314213021 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 (314213041) 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, 704291 + ... + 704736.

It is an arithmetic number, because the mean of its divisors is an integer number (78905568).

Almost surely, 2^314213021 is an apocalyptic number.

It is an amenable number.

314213021 is a deficient number, since it is larger than the sum of its proper divisors (1409251).

314213021 is a wasteful number, since it uses less digits than its factorization.

314213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409250.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 314213021 is about 17726.0548628283. The cubic root of 314213021 is about 679.8421065066.

Adding to 314213021 its reverse (120312413), we get a palindrome (434525434).

The spelling of 314213021 in words is "three hundred fourteen million, two hundred thirteen thousand, twenty-one".