123308587 has 2 divisors, whose sum is σ = 123308588. Its totient is φ = 123308586.

The previous prime is 123308573. The next prime is 123308593. The reversal of 123308587 is 785803321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123308587 - 2⁷ = 123308459 is a prime.

It is not a weakly prime, because it can be changed into another prime (123308567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61654293 + 61654294.

It is an arithmetic number, because the mean of its divisors is an integer number (61654294).

Almost surely, 2^123308587 is an apocalyptic number.

123308587 is a deficient number, since it is larger than the sum of its proper divisors (1).

123308587 is an equidigital number, since it uses as much as digits as its factorization.

123308587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 123308587 is about 11104.4399678687. The cubic root of 123308587 is about 497.7345334925.

The spelling of 123308587 in words is "one hundred twenty-three million, three hundred eight thousand, five hundred eighty-seven".