20233201291 has 2 divisors, whose sum is σ = 20233201292. Its totient is φ = 20233201290.

The previous prime is 20233201277. The next prime is 20233201343. The reversal of 20233201291 is 19210233202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20233201291 - 2⁵ = 20233201259 is a prime.

It is not a weakly prime, because it can be changed into another prime (20233201211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116600645 + 10116600646.

It is an arithmetic number, because the mean of its divisors is an integer number (10116600646).

Almost surely, 2^20233201291 is an apocalyptic number.

20233201291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233201291 is an equidigital number, since it uses as much as digits as its factorization.

20233201291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20233201291 its reverse (19210233202), we get a palindrome (39443434493).

The spelling of 20233201291 in words is "twenty billion, two hundred thirty-three million, two hundred one thousand, two hundred ninety-one".