324349621 has 4 divisors (see below), whose sum is σ = 334812544. Its totient is φ = 313886700.

The previous prime is 324349603. The next prime is 324349639. The reversal of 324349621 is 126943423.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126943423 = 73 ⋅1738951.

It is an interprime number because it is at equal distance from previous prime (324349603) and next prime (324349639).

It is a cyclic number.

It is not a de Polignac number, because 324349621 - 2¹³ = 324341429 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 (324349121) 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, 5231415 + ... + 5231476.

It is an arithmetic number, because the mean of its divisors is an integer number (83703136).

Almost surely, 2^324349621 is an apocalyptic number.

324349621 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

324349621 is a deficient number, since it is larger than the sum of its proper divisors (10462923).

324349621 is a wasteful number, since it uses less digits than its factorization.

324349621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10462922.

The product of its digits is 31104, while the sum is 34.

The square root of 324349621 is about 18009.7090759401. The cubic root of 324349621 is about 687.0755037232.

The spelling of 324349621 in words is "three hundred twenty-four million, three hundred forty-nine thousand, six hundred twenty-one".