1230023129 has 2 divisors, whose sum is σ = 1230023130. Its totient is φ = 1230023128.

The previous prime is 1230023107. The next prime is 1230023149. The reversal of 1230023129 is 9213200321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200483904 + 29539225 = 34648^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230023129 - 2⁸ = 1230022873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230023149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615011564 + 615011565.

It is an arithmetic number, because the mean of its divisors is an integer number (615011565).

Almost surely, 2^1230023129 is an apocalyptic number.

It is an amenable number.

1230023129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230023129 is an equidigital number, since it uses as much as digits as its factorization.

1230023129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1230023129 is about 35071.6855739783. The cubic root of 1230023129 is about 1071.4479854658.

The spelling of 1230023129 in words is "one billion, two hundred thirty million, twenty-three thousand, one hundred twenty-nine".