1111051013 has 4 divisors (see below), whose sum is σ = 1116807948. Its totient is φ = 1105294080.

The previous prime is 1111050961. The next prime is 1111051033. The reversal of 1111051013 is 3101501111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3101501111 = 131 ⋅23675581.

It can be written as a sum of positive squares in 2 ways, for example, as 237375649 + 873675364 = 15407^2 + 29558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111051013 - 2²⁶ = 1043942149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111051033) 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, 2878178 + ... + 2878563.

It is an arithmetic number, because the mean of its divisors is an integer number (279201987).

Almost surely, 2^1111051013 is an apocalyptic number.

It is an amenable number.

1111051013 is a deficient number, since it is larger than the sum of its proper divisors (5756935).

1111051013 is an equidigital number, since it uses as much as digits as its factorization.

1111051013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756934.

The product of its (nonzero) digits is 15, while the sum is 14.

The square root of 1111051013 is about 33332.4318494766. The cubic root of 1111051013 is about 1035.7254944342.

Adding to 1111051013 its reverse (3101501111), we get a palindrome (4212552124).

The spelling of 1111051013 in words is "one billion, one hundred eleven million, fifty-one thousand, thirteen".