2001323970 has 64 divisors (see below), whose sum is σ = 5343696000. Its totient is φ = 533003328.

The previous prime is 2001323957. The next prime is 2001323977. The reversal of 2001323970 is 793231002.

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

It is not an unprimeable number, because it can be changed into a prime (2001323977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227616 + ... + 236244.

It is an arithmetic number, because the mean of its divisors is an integer number (83495250).

Almost surely, 2^2001323970 is an apocalyptic number.

2001323970 is an abundant number, since it is smaller than the sum of its proper divisors (3342372030).

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

2001323970 is a wasteful number, since it uses less digits than its factorization.

2001323970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9504 (or 9498 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 2001323970 is about 44736.1595356597. The cubic root of 2001323970 is about 1260.1990048486.

Adding to 2001323970 its reverse (793231002), we get a palindrome (2794554972).

The spelling of 2001323970 in words is "two billion, one million, three hundred twenty-three thousand, nine hundred seventy".