1231300099 has 2 divisors, whose sum is σ = 1231300100. Its totient is φ = 1231300098.

The previous prime is 1231300061. The next prime is 1231300117. The reversal of 1231300099 is 9900031321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231300099 - 2¹⁹ = 1230775811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231300019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615650049 + 615650050.

It is an arithmetic number, because the mean of its divisors is an integer number (615650050).

Almost surely, 2^1231300099 is an apocalyptic number.

1231300099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231300099 is an equidigital number, since it uses as much as digits as its factorization.

1231300099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1231300099 is about 35089.8859929752. The cubic root of 1231300099 is about 1071.8186380437.

The spelling of 1231300099 in words is "one billion, two hundred thirty-one million, three hundred thousand, ninety-nine".