123315051053 has 2 divisors, whose sum is σ = 123315051054. Its totient is φ = 123315051052.

The previous prime is 123315051043. The next prime is 123315051073. The reversal of 123315051053 is 350150513321.

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., 85219037929 + 38096013124 = 291923^2 + 195182^2 .

It is a cyclic number.

It is not a de Polignac number, because 123315051053 - 2¹² = 123315046957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123315051043) 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, 61657525526 + 61657525527.

It is an arithmetic number, because the mean of its divisors is an integer number (61657525527).

Almost surely, 2^123315051053 is an apocalyptic number.

It is an amenable number.

123315051053 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315051053 is an equidigital number, since it uses as much as digits as its factorization.

123315051053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 123315051053 its reverse (350150513321), we get a palindrome (473465564374).

The spelling of 123315051053 in words is "one hundred twenty-three billion, three hundred fifteen million, fifty-one thousand, fifty-three".