2023391 has 8 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 1857280.

The previous prime is 2023369. The next prime is 2023393. The reversal of 2023391 is 1933202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023391 is a prime.

It is a super-2 number, since 2×2023391² = 8188222277762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023393) 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, 755 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

2^2023391 is an apocalyptic number.

2023391 is a deficient number, since it is larger than the sum of its proper divisors (172033).

2023391 is a wasteful number, since it uses less digits than its factorization.

2023391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2023391 is about 1422.4594897571. The cubic root of 2023391 is about 126.4813826904.

Adding to 2023391 its reverse (1933202), we get a palindrome (3956593).

The spelling of 2023391 in words is "two million, twenty-three thousand, three hundred ninety-one".