2001131970 has 32 divisors (see below), whose sum is σ = 4803993792. Its totient is φ = 533493312.

The previous prime is 2001131903. The next prime is 2001131983. The reversal of 2001131970 is 791311002.

It is a super-2 number, since 2×2001131970² = 8009058322712161800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001131970.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 156229 + ... + 168551.

It is an arithmetic number, because the mean of its divisors is an integer number (150124806).

Almost surely, 2^2001131970 is an apocalyptic number.

2001131970 is an abundant number, since it is smaller than the sum of its proper divisors (2802861822).

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

2001131970 is a wasteful number, since it uses less digits than its factorization.

2001131970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17746.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 2001131970 is about 44734.0135690953. The cubic root of 2001131970 is about 1260.1587038695.

Adding to 2001131970 its reverse (791311002), we get a palindrome (2792442972).

The spelling of 2001131970 in words is "two billion, one million, one hundred thirty-one thousand, nine hundred seventy".