123013521353 has 2 divisors, whose sum is σ = 123013521354. Its totient is φ = 123013521352.

The previous prime is 123013521289. The next prime is 123013521383. The reversal of 123013521353 is 353125310321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118409627449 + 4603893904 = 344107^2 + 67852^2 .

It is a cyclic number.

It is not a de Polignac number, because 123013521353 - 2⁶ = 123013521289 is a prime.

It is not a weakly prime, because it can be changed into another prime (123013521383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506760676 + 61506760677.

It is an arithmetic number, because the mean of its divisors is an integer number (61506760677).

Almost surely, 2^123013521353 is an apocalyptic number.

It is an amenable number.

123013521353 is a deficient number, since it is larger than the sum of its proper divisors (1).

123013521353 is an equidigital number, since it uses as much as digits as its factorization.

123013521353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 123013521353 its reverse (353125310321), we get a palindrome (476138831674).

The spelling of 123013521353 in words is "one hundred twenty-three billion, thirteen million, five hundred twenty-one thousand, three hundred fifty-three".