20230091 has 6 divisors (see below), whose sum is σ = 23533020. Its totient is φ = 17340036.

The previous prime is 20230061. The next prime is 20230099. The reversal of 20230091 is 19003202.

It is not a de Polignac number, because 20230091 - 2¹⁰ = 20229067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20230099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206381 + ... + 206478.

It is an arithmetic number, because the mean of its divisors is an integer number (3922170).

Almost surely, 2^20230091 is an apocalyptic number.

20230091 is a deficient number, since it is larger than the sum of its proper divisors (3302929).

20230091 is an equidigital number, since it uses as much as digits as its factorization.

20230091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412873 (or 412866 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20230091 is about 4497.7873449064. The cubic root of 20230091 is about 272.4787335759.

Adding to 20230091 its reverse (19003202), we get a palindrome (39233293).

The spelling of 20230091 in words is "twenty million, two hundred thirty thousand, ninety-one".