523102401281 has 2 divisors, whose sum is σ = 523102401282. Its totient is φ = 523102401280.

The previous prime is 523102401277. The next prime is 523102401293. The reversal of 523102401281 is 182104201325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417207479056 + 105894922225 = 645916^2 + 325415^2 .

It is a cyclic number.

It is not a de Polignac number, because 523102401281 - 2² = 523102401277 is a prime.

It is a super-2 number, since 2×523102401281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (523102403281) 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, 261551200640 + 261551200641.

It is an arithmetic number, because the mean of its divisors is an integer number (261551200641).

Almost surely, 2^523102401281 is an apocalyptic number.

It is an amenable number.

523102401281 is a deficient number, since it is larger than the sum of its proper divisors (1).

523102401281 is an equidigital number, since it uses as much as digits as its factorization.

523102401281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The spelling of 523102401281 in words is "five hundred twenty-three billion, one hundred two million, four hundred one thousand, two hundred eighty-one".