123398248187 has 2 divisors, whose sum is σ = 123398248188. Its totient is φ = 123398248186.

The previous prime is 123398248157. The next prime is 123398248213. The reversal of 123398248187 is 781842893321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123398248187 - 2¹² = 123398244091 is a prime.

It is not a weakly prime, because it can be changed into another prime (123398248157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61699124093 + 61699124094.

It is an arithmetic number, because the mean of its divisors is an integer number (61699124094).

Almost surely, 2^123398248187 is an apocalyptic number.

123398248187 is a deficient number, since it is larger than the sum of its proper divisors (1).

123398248187 is an equidigital number, since it uses as much as digits as its factorization.

123398248187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The spelling of 123398248187 in words is "one hundred twenty-three billion, three hundred ninety-eight million, two hundred forty-eight thousand, one hundred eighty-seven".