1103123129 has 2 divisors, whose sum is σ = 1103123130. Its totient is φ = 1103123128.

The previous prime is 1103123123. The next prime is 1103123159. The reversal of 1103123129 is 9213213011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1052029225 + 51093904 = 32435^2 + 7148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103123129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103123123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551561564 + 551561565.

It is an arithmetic number, because the mean of its divisors is an integer number (551561565).

Almost surely, 2^1103123129 is an apocalyptic number.

It is an amenable number.

1103123129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103123129 is an equidigital number, since it uses as much as digits as its factorization.

1103123129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1103123129 is about 33213.2974725486. The cubic root of 1103123129 is about 1033.2561450379.

The spelling of 1103123129 in words is "one billion, one hundred three million, one hundred twenty-three thousand, one hundred twenty-nine".