321125355 has 24 divisors (see below), whose sum is σ = 558803232. Its totient is φ = 170594304.

The previous prime is 321125341. The next prime is 321125369. The reversal of 321125355 is 553521123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (321125341) and next prime (321125369).

It is not a de Polignac number, because 321125355 - 2⁴ = 321125339 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2319 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (23283468).

Almost surely, 2^321125355 is an apocalyptic number.

321125355 is a deficient number, since it is larger than the sum of its proper divisors (237677877).

321125355 is a wasteful number, since it uses less digits than its factorization.

321125355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28035 (or 28032 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 321125355 is about 17919.9708426102. The cubic root of 321125355 is about 684.7912447509.

Adding to 321125355 its reverse (553521123), we get a palindrome (874646478).

The spelling of 321125355 in words is "three hundred twenty-one million, one hundred twenty-five thousand, three hundred fifty-five".