123230815459 has 2 divisors, whose sum is σ = 123230815460. Its totient is φ = 123230815458.

The previous prime is 123230815457. The next prime is 123230815537. The reversal of 123230815459 is 954518032321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123230815459 - 2¹ = 123230815457 is a prime.

It is a super-2 number, since 2×123230815459² (a number of 23 digits) contains 22 as substring.

Together with 123230815457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123230815457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615407729 + 61615407730.

It is an arithmetic number, because the mean of its divisors is an integer number (61615407730).

Almost surely, 2^123230815459 is an apocalyptic number.

123230815459 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230815459 is an equidigital number, since it uses as much as digits as its factorization.

123230815459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 123230815459 in words is "one hundred twenty-three billion, two hundred thirty million, eight hundred fifteen thousand, four hundred fifty-nine".