1031103113 has 4 divisors (see below), whose sum is σ = 1041733140. Its totient is φ = 1020473088.

The previous prime is 1031103103. The next prime is 1031103131. The reversal of 1031103113 is 3113011301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3113011301 = 47 ⋅66234283.

It can be written as a sum of positive squares in 2 ways, for example, as 190798969 + 840304144 = 13813^2 + 28988^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031103113 - 2⁴ = 1031103097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1031103103) 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, 5314868 + ... + 5315061.

It is an arithmetic number, because the mean of its divisors is an integer number (260433285).

Almost surely, 2^1031103113 is an apocalyptic number.

It is an amenable number.

1031103113 is a deficient number, since it is larger than the sum of its proper divisors (10630027).

1031103113 is an equidigital number, since it uses as much as digits as its factorization.

1031103113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630026.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1031103113 is about 32110.7943377301. The cubic root of 1031103113 is about 1010.2620347468.

Adding to 1031103113 its reverse (3113011301), we get a palindrome (4144114414).

The spelling of 1031103113 in words is "one billion, thirty-one million, one hundred three thousand, one hundred thirteen".