321313135 has 32 divisors (see below), whose sum is σ = 457486848. Its totient is φ = 213563520.

The previous prime is 321313133. The next prime is 321313147. The reversal of 321313135 is 531313123.

It is a happy number.

It is not a de Polignac number, because 321313135 - 2¹ = 321313133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71464 + ... + 75826.

It is an arithmetic number, because the mean of its divisors is an integer number (14296464).

Almost surely, 2^321313135 is an apocalyptic number.

321313135 is a deficient number, since it is larger than the sum of its proper divisors (136173713).

321313135 is a wasteful number, since it uses less digits than its factorization.

321313135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495.

The product of its digits is 810, while the sum is 22.

The square root of 321313135 is about 17925.2094827369. The cubic root of 321313135 is about 684.9246973538.

Adding to 321313135 its reverse (531313123), we get a palindrome (852626258).

The spelling of 321313135 in words is "three hundred twenty-one million, three hundred thirteen thousand, one hundred thirty-five".