1230134291 has 2 divisors, whose sum is σ = 1230134292. Its totient is φ = 1230134290.

The previous prime is 1230134287. The next prime is 1230134299. The reversal of 1230134291 is 1924310321.

It is a weak prime.

It is an emirp because it is prime and its reverse (1924310321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1230134291 - 2² = 1230134287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230134291.

It is not a weakly prime, because it can be changed into another prime (1230134299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615067145 + 615067146.

It is an arithmetic number, because the mean of its divisors is an integer number (615067146).

Almost surely, 2^1230134291 is an apocalyptic number.

1230134291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230134291 is an equidigital number, since it uses as much as digits as its factorization.

1230134291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1230134291 is about 35073.2703208583. The cubic root of 1230134291 is about 1071.4802614749.

The spelling of 1230134291 in words is "one billion, two hundred thirty million, one hundred thirty-four thousand, two hundred ninety-one".