328212501 has 4 divisors (see below), whose sum is σ = 437616672. Its totient is φ = 218808332.

The previous prime is 328212473. The next prime is 328212539. The reversal of 328212501 is 105212823.

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 328212501 - 2¹⁴ = 328196117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328212551) 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, 54702081 + ... + 54702086.

It is an arithmetic number, because the mean of its divisors is an integer number (109404168).

Almost surely, 2^328212501 is an apocalyptic number.

It is an amenable number.

328212501 is a deficient number, since it is larger than the sum of its proper divisors (109404171).

328212501 is a wasteful number, since it uses less digits than its factorization.

328212501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109404170.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 328212501 is about 18116.6360287996. The cubic root of 328212501 is about 689.7923487731.

The spelling of 328212501 in words is "three hundred twenty-eight million, two hundred twelve thousand, five hundred one".