123813901 has 2 divisors, whose sum is σ = 123813902. Its totient is φ = 123813900.

The previous prime is 123813871. The next prime is 123813917. The reversal of 123813901 is 109318321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114511401 + 9302500 = 10701^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 123813901 - 2⁵ = 123813869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123813901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123813961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61906950 + 61906951.

It is an arithmetic number, because the mean of its divisors is an integer number (61906951).

Almost surely, 2^123813901 is an apocalyptic number.

It is an amenable number.

123813901 is a deficient number, since it is larger than the sum of its proper divisors (1).

123813901 is an equidigital number, since it uses as much as digits as its factorization.

123813901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 123813901 is about 11127.1694963274. The cubic root of 123813901 is about 498.4135060648.

The spelling of 123813901 in words is "one hundred twenty-three million, eight hundred thirteen thousand, nine hundred one".