2001311232 has 40 divisors (see below), whose sum is σ = 5331622296. Its totient is φ = 667103232.

The previous prime is 2001311209. The next prime is 2001311243. The reversal of 2001311232 is 2321131002.

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 3 ways as a sum of consecutive naturals, for example, 649933 + ... + 653004.

Almost surely, 2^2001311232 is an apocalyptic number.

It is an amenable number.

2001311232 is an abundant number, since it is smaller than the sum of its proper divisors (3330311064).

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

2001311232 is an equidigital number, since it uses as much as digits as its factorization.

2001311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302958 (or 1302942 counting only the distinct ones).

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

The square root of 2001311232 is about 44736.0171673787. The cubic root of 2001311232 is about 1260.1963312104.

Adding to 2001311232 its reverse (2321131002), we get a palindrome (4322442234).

The spelling of 2001311232 in words is "two billion, one million, three hundred eleven thousand, two hundred thirty-two".