2001023043 has 8 divisors (see below), whose sum is σ = 2669641728. Its totient is φ = 1333209864.

The previous prime is 2001023027. The next prime is 2001023053. The reversal of 2001023043 is 3403201002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001023043 - 2⁴ = 2001023027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001023053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195555 + ... + 205532.

It is an arithmetic number, because the mean of its divisors is an integer number (333705216).

Almost surely, 2^2001023043 is an apocalyptic number.

2001023043 is a deficient number, since it is larger than the sum of its proper divisors (668618685).

2001023043 is a wasteful number, since it uses less digits than its factorization.

2001023043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402753.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2001023043 is about 44732.7960561376. The cubic root of 2001023043 is about 1260.1358388444.

Adding to 2001023043 its reverse (3403201002), we get a palindrome (5404224045).

The spelling of 2001023043 in words is "two billion, one million, twenty-three thousand, forty-three".