331520132 has 12 divisors (see below), whose sum is σ = 610695120. Its totient is φ = 157035816.

The previous prime is 331520129. The next prime is 331520149. The reversal of 331520132 is 231025133.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2180978 + ... + 2181129.

It is an arithmetic number, because the mean of its divisors is an integer number (50891260).

Almost surely, 2^331520132 is an apocalyptic number.

It is an amenable number.

331520132 is a deficient number, since it is larger than the sum of its proper divisors (279174988).

331520132 is a wasteful number, since it uses less digits than its factorization.

331520132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362130 (or 4362128 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 331520132 is about 18207.6943076272. The cubic root of 331520132 is about 692.1017842864.

Adding to 331520132 its reverse (231025133), we get a palindrome (562545265).

The spelling of 331520132 in words is "three hundred thirty-one million, five hundred twenty thousand, one hundred thirty-two".