2006031621 has 8 divisors (see below), whose sum is σ = 2917864224. Its totient is φ = 1215776720.

The previous prime is 2006031617. The next prime is 2006031659. The reversal of 2006031621 is 1261306002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2006031621 - 2² = 2006031617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006031611) 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, 30394386 + ... + 30394451.

It is an arithmetic number, because the mean of its divisors is an integer number (364733028).

Almost surely, 2^2006031621 is an apocalyptic number.

It is an amenable number.

2006031621 is a deficient number, since it is larger than the sum of its proper divisors (911832603).

2006031621 is a wasteful number, since it uses less digits than its factorization.

2006031621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60788851.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2006031621 is about 44788.7443561438. The cubic root of 2006031621 is about 1261.1863398316.

Adding to 2006031621 its reverse (1261306002), we get a palindrome (3267337623).

It can be divided in two parts, 20060 and 31621, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 2006031621 in words is "two billion, six million, thirty-one thousand, six hundred twenty-one".