2001131004 has 12 divisors (see below), whose sum is σ = 4669305704. Its totient is φ = 667043664.

The previous prime is 2001130931. The next prime is 2001131023. The reversal of 2001131004 is 4001311002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 166760917 = 2001131004 / (2 + 0 + 0 + 1 + 1 + 3 + 1 + 0 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83380447 + ... + 83380470.

Almost surely, 2^2001131004 is an apocalyptic number.

It is an amenable number.

2001131004 is an abundant number, since it is smaller than the sum of its proper divisors (2668174700).

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

2001131004 is a wasteful number, since it uses less digits than its factorization.

2001131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166760924 (or 166760922 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2001131004 is about 44734.0027719407. The cubic root of 2001131004 is about 1260.1585010986.

Adding to 2001131004 its reverse (4001311002), we get a palindrome (6002442006).

It can be divided in two parts, 20011 and 31004, that added together give a palindrome (51015).

The spelling of 2001131004 in words is "two billion, one million, one hundred thirty-one thousand, four".