3214243621 has 4 divisors (see below), whose sum is σ = 3228038892. Its totient is φ = 3200448352.

The previous prime is 3214243577. The next prime is 3214243631. The reversal of 3214243621 is 1263424123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 941814721 + 2272428900 = 30689^2 + 47670^2 .

It is a cyclic number.

It is not a de Polignac number, because 3214243621 - 2¹¹ = 3214241573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3214243621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3214243631) 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, 6897286 + ... + 6897751.

It is an arithmetic number, because the mean of its divisors is an integer number (807009723).

Almost surely, 2^3214243621 is an apocalyptic number.

It is an amenable number.

3214243621 is a deficient number, since it is larger than the sum of its proper divisors (13795271).

3214243621 is a wasteful number, since it uses less digits than its factorization.

3214243621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795270.

The product of its digits is 6912, while the sum is 28.

The square root of 3214243621 is about 56694.2997222825. The cubic root of 3214243621 is about 1475.7957779656.

Adding to 3214243621 its reverse (1263424123), we get a palindrome (4477667744).

The spelling of 3214243621 in words is "three billion, two hundred fourteen million, two hundred forty-three thousand, six hundred twenty-one".