123105303019 has 2 divisors, whose sum is σ = 123105303020. Its totient is φ = 123105303018.

The previous prime is 123105303011. The next prime is 123105303043. The reversal of 123105303019 is 910303501321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123105303019 - 2³ = 123105303011 is a prime.

It is a super-2 number, since 2×123105303019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123105303011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61552651509 + 61552651510.

It is an arithmetic number, because the mean of its divisors is an integer number (61552651510).

Almost surely, 2^123105303019 is an apocalyptic number.

123105303019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123105303019 is an equidigital number, since it uses as much as digits as its factorization.

123105303019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 28.

The spelling of 123105303019 in words is "one hundred twenty-three billion, one hundred five million, three hundred three thousand, nineteen".