321016164 has 48 divisors (see below), whose sum is σ = 856937088. Its totient is φ = 91623168.

The previous prime is 321016159. The next prime is 321016169. The reversal of 321016164 is 461610123.

It is an interprime number because it is at equal distance from previous prime (321016159) and next prime (321016169).

It is not an unprimeable number, because it can be changed into a prime (321016169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132952 + ... + 135344.

It is an arithmetic number, because the mean of its divisors is an integer number (17852856).

Almost surely, 2^321016164 is an apocalyptic number.

It is an amenable number.

321016164 is an abundant number, since it is smaller than the sum of its proper divisors (535920924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321016164 is a wasteful number, since it uses less digits than its factorization.

321016164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004 (or 4002 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 321016164 is about 17916.9239547418. The cubic root of 321016164 is about 684.7136203215.

Adding to 321016164 its reverse (461610123), we get a palindrome (782626287).

The spelling of 321016164 in words is "three hundred twenty-one million, sixteen thousand, one hundred sixty-four".