2030991 has 8 divisors (see below), whose sum is σ = 2717184. Its totient is φ = 1349400.

The previous prime is 2030981. The next prime is 2030999. The reversal of 2030991 is 1990302.

It is a happy number.

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

It is not a de Polignac number, because 2030991 - 2¹⁰ = 2029967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2030999) 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, 66 + ... + 2016.

It is an arithmetic number, because the mean of its divisors is an integer number (339648).

2^2030991 is an apocalyptic number.

2030991 is a deficient number, since it is larger than the sum of its proper divisors (686193).

2030991 is a wasteful number, since it uses less digits than its factorization.

2030991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 2030991 is about 1425.1284152665. The cubic root of 2030991 is about 126.6395425147.

The spelling of 2030991 in words is "two million, thirty thousand, nine hundred ninety-one".