1145113103 has 4 divisors (see below), whose sum is σ = 1145531808. Its totient is φ = 1144694400.

The previous prime is 1145113049. The next prime is 1145113141. The reversal of 1145113103 is 3013115411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145113103 - 2⁸ = 1145112847 is a prime.

It is a super-2 number, since 2×1145113103² = 2622568037324577218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145113003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205223 + ... + 210728.

It is an arithmetic number, because the mean of its divisors is an integer number (286382952).

Almost surely, 2^1145113103 is an apocalyptic number.

1145113103 is a deficient number, since it is larger than the sum of its proper divisors (418705).

1145113103 is an equidigital number, since it uses as much as digits as its factorization.

1145113103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418704.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1145113103 is about 33839.5198399741. The cubic root of 1145113103 is about 1046.2034023098.

Adding to 1145113103 its reverse (3013115411), we get a palindrome (4158228514).

The spelling of 1145113103 in words is "one billion, one hundred forty-five million, one hundred thirteen thousand, one hundred three".