123315113 has 2 divisors, whose sum is σ = 123315114. Its totient is φ = 123315112.

The previous prime is 123315109. The next prime is 123315131. The reversal of 123315113 is 311513321.

Together with next prime (123315131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76090729 + 47224384 = 8723^2 + 6872^2 .

It is a cyclic number.

It is not a de Polignac number, because 123315113 - 2² = 123315109 is a prime.

It is not a weakly prime, because it can be changed into another prime (123315713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61657556 + 61657557.

It is an arithmetic number, because the mean of its divisors is an integer number (61657557).

Almost surely, 2^123315113 is an apocalyptic number.

It is an amenable number.

123315113 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315113 is an equidigital number, since it uses as much as digits as its factorization.

123315113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 20.

The square root of 123315113 is about 11104.7338104072. The cubic root of 123315113 is about 497.7433140604.

Adding to 123315113 its reverse (311513321), we get a palindrome (434828434).

The spelling of 123315113 in words is "one hundred twenty-three million, three hundred fifteen thousand, one hundred thirteen".