320121132 has 12 divisors (see below), whose sum is σ = 746949336. Its totient is φ = 106707040.

The previous prime is 320121127. The next prime is 320121149. The reversal of 320121132 is 231121023.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×320121132² = 204955078305922848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13338369 + ... + 13338392.

It is an arithmetic number, because the mean of its divisors is an integer number (62245778).

Almost surely, 2^320121132 is an apocalyptic number.

It is an amenable number.

320121132 is an abundant number, since it is smaller than the sum of its proper divisors (426828204).

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

320121132 is a wasteful number, since it uses less digits than its factorization.

320121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26676768 (or 26676766 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 320121132 is about 17891.9292419795. The cubic root of 320121132 is about 684.0766731190.

Adding to 320121132 its reverse (231121023), we get a palindrome (551242155).

The spelling of 320121132 in words is "three hundred twenty million, one hundred twenty-one thousand, one hundred thirty-two".