2001131002 has 16 divisors (see below), whose sum is σ = 3268921320. Its totient is φ = 913220352.

The previous prime is 2001130931. The next prime is 2001131023. The reversal of 2001131002 is 2001311002.

It can be written as a sum of positive squares in 4 ways, for example, as 360962001 + 1640169001 = 18999^2 + 40499^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2001131002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430083 + ... + 434710.

Almost surely, 2^2001131002 is an apocalyptic number.

2001131002 is a deficient number, since it is larger than the sum of its proper divisors (1267790318).

2001131002 is a wasteful number, since it uses less digits than its factorization.

2001131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864897.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001131002 is about 44734.0027495864. The cubic root of 2001131002 is about 1260.1585006788.

Adding to 2001131002 its reverse (2001311002), we get a palindrome (4002442004).

The spelling of 2001131002 in words is "two billion, one million, one hundred thirty-one thousand, two".