2001031550 has 96 divisors (see below), whose sum is σ = 4513639680. Its totient is φ = 644716800.

The previous prime is 2001031547. The next prime is 2001031583. The reversal of 2001031550 is 551301002.

2001031550 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 870002 + ... + 872298.

It is an arithmetic number, because the mean of its divisors is an integer number (47017080).

Almost surely, 2^2001031550 is an apocalyptic number.

2001031550 is an abundant number, since it is smaller than the sum of its proper divisors (2512608130).

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

2001031550 is a wasteful number, since it uses less digits than its factorization.

2001031550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2461 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 2001031550 is about 44732.8911428716. The cubic root of 2001031550 is about 1260.1376245910.

Adding to 2001031550 its reverse (551301002), we get a palindrome (2552332552).

The spelling of 2001031550 in words is "two billion, one million, thirty-one thousand, five hundred fifty".