123315527 has 2 divisors, whose sum is σ = 123315528. Its totient is φ = 123315526.

The previous prime is 123315503. The next prime is 123315559. The reversal of 123315527 is 725513321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123315527 - 2¹² = 123311431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123315527.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123315727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61657763 + 61657764.

It is an arithmetic number, because the mean of its divisors is an integer number (61657764).

Almost surely, 2^123315527 is an apocalyptic number.

123315527 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315527 is an equidigital number, since it uses as much as digits as its factorization.

123315527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 123315527 is about 11104.7524510905. The cubic root of 123315527 is about 497.7438710765.

Adding to 123315527 its reverse (725513321), we get a palindrome (848828848).

The spelling of 123315527 in words is "one hundred twenty-three million, three hundred fifteen thousand, five hundred twenty-seven".