328123551 has 12 divisors (see below), whose sum is σ = 508926552. Its totient is φ = 187499088.

The previous prime is 328123529. The next prime is 328123553. The reversal of 328123551 is 155321823.

It is not a de Polignac number, because 328123551 - 2⁹ = 328123039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328123553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1115920 + ... + 1116213.

It is an arithmetic number, because the mean of its divisors is an integer number (42410546).

Almost surely, 2^328123551 is an apocalyptic number.

328123551 is a deficient number, since it is larger than the sum of its proper divisors (180803001).

328123551 is a wasteful number, since it uses less digits than its factorization.

328123551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232150 (or 2232143 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 328123551 is about 18114.1809364928. The cubic root of 328123551 is about 689.7300288097.

It can be divided in two parts, 32812 and 3551, that added together give a palindrome (36363).

The spelling of 328123551 in words is "three hundred twenty-eight million, one hundred twenty-three thousand, five hundred fifty-one".