2001031545 has 16 divisors (see below), whose sum is σ = 3202480512. Its totient is φ = 1066940160.

The previous prime is 2001031537. The next prime is 2001031547. The reversal of 2001031545 is 5451301002.

It is not a de Polignac number, because 2001031545 - 2³ = 2001031537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001031547) 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 15 ways as a sum of consecutive naturals, for example, 51265 + ... + 81425.

It is an arithmetic number, because the mean of its divisors is an integer number (200155032).

Almost surely, 2^2001031545 is an apocalyptic number.

It is an amenable number.

2001031545 is a deficient number, since it is larger than the sum of its proper divisors (1201448967).

2001031545 is a wasteful number, since it uses less digits than its factorization.

2001031545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34592.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2001031545 is about 44732.8910869843. The cubic root of 2001031545 is about 1260.1376235415.

Adding to 2001031545 its reverse (5451301002), we get a palindrome (7452332547).

The spelling of 2001031545 in words is "two billion, one million, thirty-one thousand, five hundred forty-five".