1023105113 has 4 divisors (see below), whose sum is σ = 1067587968. Its totient is φ = 978622260.

The previous prime is 1023105091. The next prime is 1023105131. The reversal of 1023105113 is 3115013201.

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: 3115013201 = 127 ⋅24527663.

It is a cyclic number.

It is not a de Polignac number, because 1023105113 - 2⁶ = 1023105049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1023105091 and 1023105100.

It is not an unprimeable number, because it can be changed into a prime (1023105133) 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, 22241393 + ... + 22241438.

It is an arithmetic number, because the mean of its divisors is an integer number (266896992).

Almost surely, 2^1023105113 is an apocalyptic number.

It is an amenable number.

1023105113 is a deficient number, since it is larger than the sum of its proper divisors (44482855).

1023105113 is an equidigital number, since it uses as much as digits as its factorization.

1023105113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44482854.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1023105113 is about 31986.0143343931. The cubic root of 1023105113 is about 1007.6431379445.

Adding to 1023105113 its reverse (3115013201), we get a palindrome (4138118314).

The spelling of 1023105113 in words is "one billion, twenty-three million, one hundred five thousand, one hundred thirteen".