123427363109 has 2 divisors, whose sum is σ = 123427363110. Its totient is φ = 123427363108.

The previous prime is 123427363027. The next prime is 123427363121. The reversal of 123427363109 is 901363724321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110255210209 + 13172152900 = 332047^2 + 114770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123427363109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123427368109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61713681554 + 61713681555.

It is an arithmetic number, because the mean of its divisors is an integer number (61713681555).

Almost surely, 2^123427363109 is an apocalyptic number.

It is an amenable number.

123427363109 is a deficient number, since it is larger than the sum of its proper divisors (1).

123427363109 is an equidigital number, since it uses as much as digits as its factorization.

123427363109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 123427363109 in words is "one hundred twenty-three billion, four hundred twenty-seven million, three hundred sixty-three thousand, one hundred nine".