123501913 has 2 divisors, whose sum is σ = 123501914. Its totient is φ = 123501912.

The previous prime is 123501877. The next prime is 123501941. The reversal of 123501913 is 319105321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121616784 + 1885129 = 11028^2 + 1373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123501913 is a prime.

It is not a weakly prime, because it can be changed into another prime (123501943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61750956 + 61750957.

It is an arithmetic number, because the mean of its divisors is an integer number (61750957).

Almost surely, 2^123501913 is an apocalyptic number.

It is an amenable number.

123501913 is a deficient number, since it is larger than the sum of its proper divisors (1).

123501913 is an equidigital number, since it uses as much as digits as its factorization.

123501913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 123501913 is about 11113.1414550522. The cubic root of 123501913 is about 497.9945175012.

The spelling of 123501913 in words is "one hundred twenty-three million, five hundred one thousand, nine hundred thirteen".