1111111345 has 8 divisors (see below), whose sum is σ = 1358491176. Its totient is φ = 872117376.

The previous prime is 1111111343. The next prime is 1111111363. The reversal of 1111111345 is 5431111111.

It can be written as a sum of positive squares in 4 ways, for example, as 450415729 + 660695616 = 21223^2 + 25704^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111111345 - 2¹ = 1111111343 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111111343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096172 + ... + 2096701.

It is an arithmetic number, because the mean of its divisors is an integer number (169811397).

Almost surely, 2^1111111345 is an apocalyptic number.

It is an amenable number.

1111111345 is a deficient number, since it is larger than the sum of its proper divisors (247379831).

1111111345 is an equidigital number, since it uses as much as digits as its factorization.

1111111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192931.

The product of its digits is 60, while the sum is 19.

The square root of 1111111345 is about 33333.3368416665. The cubic root of 1111111345 is about 1035.7442413260.

Adding to 1111111345 its reverse (5431111111), we get a palindrome (6542222456).

The spelling of 1111111345 in words is "one billion, one hundred eleven million, one hundred eleven thousand, three hundred forty-five".