23011020281 has 2 divisors, whose sum is σ = 23011020282. Its totient is φ = 23011020280.

The previous prime is 23011020203. The next prime is 23011020317. The reversal of 23011020281 is 18202011032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22040074681 + 970945600 = 148459^2 + 31160^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011020281 - 2¹⁰ = 23011019257 is a prime.

It is a super-2 number, since 2×23011020281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23011020581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505510140 + 11505510141.

It is an arithmetic number, because the mean of its divisors is an integer number (11505510141).

Almost surely, 2^23011020281 is an apocalyptic number.

It is an amenable number.

23011020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011020281 is an equidigital number, since it uses as much as digits as its factorization.

23011020281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The spelling of 23011020281 in words is "twenty-three billion, eleven million, twenty thousand, two hundred eighty-one".