20234443231 has 2 divisors, whose sum is σ = 20234443232. Its totient is φ = 20234443230.

The previous prime is 20234443199. The next prime is 20234443249. The reversal of 20234443231 is 13234443202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20234443231 - 2⁵ = 20234443199 is a prime.

It is a super-2 number, since 2×20234443231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20234443231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20234443261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117221615 + 10117221616.

It is an arithmetic number, because the mean of its divisors is an integer number (10117221616).

Almost surely, 2^20234443231 is an apocalyptic number.

20234443231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234443231 is an equidigital number, since it uses as much as digits as its factorization.

20234443231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20234443231 its reverse (13234443202), we get a palindrome (33468886433).

The spelling of 20234443231 in words is "twenty billion, two hundred thirty-four million, four hundred forty-three thousand, two hundred thirty-one".