2991023 has 8 divisors (see below), whose sum is σ = 3457440. Its totient is φ = 2534400.

The previous prime is 2990993. The next prime is 2991041. The reversal of 2991023 is 3201992.

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 2991023 - 2¹⁴ = 2974639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2990983 and 2991001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991083) 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, 1778 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (432180).

2^2991023 is an apocalyptic number.

2991023 is a deficient number, since it is larger than the sum of its proper divisors (466417).

2991023 is an equidigital number, since it uses as much as digits as its factorization.

2991023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 2991023 is about 1729.4574293691. The cubic root of 2991023 is about 144.0809569208.

The spelling of 2991023 in words is "two million, nine hundred ninety-one thousand, twenty-three".