20231111033257 has 2 divisors, whose sum is σ = 20231111033258. Its totient is φ = 20231111033256.

The previous prime is 20231111033227. The next prime is 20231111033293. The reversal of 20231111033257 is 75233011113202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12027377738601 + 8203733294656 = 3468051^2 + 2864216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20231111033257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20231111033227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115555516628 + 10115555516629.

It is an arithmetic number, because the mean of its divisors is an integer number (10115555516629).

Almost surely, 2^{20231111033257} is an apocalyptic number.

It is an amenable number.

20231111033257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231111033257 is an equidigital number, since it uses as much as digits as its factorization.

20231111033257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 20231111033257 its reverse (75233011113202), we get a palindrome (95464122146459).

The spelling of 20231111033257 in words is "twenty trillion, two hundred thirty-one billion, one hundred eleven million, thirty-three thousand, two hundred fifty-seven".