1145230113 has 4 divisors (see below), whose sum is σ = 1526973488. Its totient is φ = 763486740.

The previous prime is 1145230091. The next prime is 1145230169. The reversal of 1145230113 is 3110325411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3110325411 = 3 ⋅1036775137.

It is not a de Polignac number, because 1145230113 - 2⁶ = 1145230049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145230113.

It is not an unprimeable number, because it can be changed into a prime (1145230193) 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 in 3 ways as a sum of consecutive naturals, for example, 190871683 + ... + 190871688.

It is an arithmetic number, because the mean of its divisors is an integer number (381743372).

Almost surely, 2^1145230113 is an apocalyptic number.

It is an amenable number.

1145230113 is a deficient number, since it is larger than the sum of its proper divisors (381743375).

1145230113 is an equidigital number, since it uses as much as digits as its factorization.

1145230113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381743374.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1145230113 is about 33841.2486915007. The cubic root of 1145230113 is about 1046.2390354976.

Adding to 1145230113 its reverse (3110325411), we get a palindrome (4255555524).

The spelling of 1145230113 in words is "one billion, one hundred forty-five million, two hundred thirty thousand, one hundred thirteen".