321148152 has 160 divisors (see below), whose sum is σ = 984891600. Its totient is φ = 97168896.

The previous prime is 321148109. The next prime is 321148169. The reversal of 321148152 is 251841123.

It is a super-2 number, since 2×321148152² = 206272271066030208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 564124 + ... + 564692.

Almost surely, 2^321148152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321148152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492445800).

321148152 is an abundant number, since it is smaller than the sum of its proper divisors (663743448).

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

321148152 is a wasteful number, since it uses less digits than its factorization.

321148152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 654 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 321148152 is about 17920.6069093655. The cubic root of 321148152 is about 684.8074490321.

Adding to 321148152 its reverse (251841123), we get a palindrome (572989275).

The spelling of 321148152 in words is "three hundred twenty-one million, one hundred forty-eight thousand, one hundred fifty-two".