1230307129 has 2 divisors, whose sum is σ = 1230307130. Its totient is φ = 1230307128.

The previous prime is 1230307121. The next prime is 1230307201. The reversal of 1230307129 is 9217030321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651423529 + 578883600 = 25523^2 + 24060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230307129 - 2³ = 1230307121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230307097 and 1230307106.

It is not a weakly prime, because it can be changed into another prime (1230307121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615153564 + 615153565.

It is an arithmetic number, because the mean of its divisors is an integer number (615153565).

Almost surely, 2^1230307129 is an apocalyptic number.

It is an amenable number.

1230307129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230307129 is an equidigital number, since it uses as much as digits as its factorization.

1230307129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1230307129 is about 35075.7341904628. The cubic root of 1230307129 is about 1071.5304413168.

The spelling of 1230307129 in words is "one billion, two hundred thirty million, three hundred seven thousand, one hundred twenty-nine".