1231430113 has 2 divisors, whose sum is σ = 1231430114. Its totient is φ = 1231430112.

The previous prime is 1231430107. The next prime is 1231430129. The reversal of 1231430113 is 3110341321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703947024 + 527483089 = 26532^2 + 22967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231430113 - 2⁹ = 1231429601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231430183) 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, 615715056 + 615715057.

It is an arithmetic number, because the mean of its divisors is an integer number (615715057).

Almost surely, 2^1231430113 is an apocalyptic number.

It is an amenable number.

1231430113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231430113 is an equidigital number, since it uses as much as digits as its factorization.

1231430113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1231430113 is about 35091.7385291752. The cubic root of 1231430113 is about 1071.8563614560.

Adding to 1231430113 its reverse (3110341321), we get a palindrome (4341771434).

The spelling of 1231430113 in words is "one billion, two hundred thirty-one million, four hundred thirty thousand, one hundred thirteen".