1103311001 has 4 divisors (see below), whose sum is σ = 1188181092. Its totient is φ = 1018440912.

The previous prime is 1103310997. The next prime is 1103311007. The reversal of 1103311001 is 1001133011.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 745344601 + 357966400 = 27301^2 + 18920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103311001 - 2² = 1103310997 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 (1103311007) 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, 42435026 + ... + 42435051.

It is an arithmetic number, because the mean of its divisors is an integer number (297045273).

Almost surely, 2^1103311001 is an apocalyptic number.

It is an amenable number.

1103311001 is a deficient number, since it is larger than the sum of its proper divisors (84870091).

1103311001 is an equidigital number, since it uses as much as digits as its factorization.

1103311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84870090.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1103311001 is about 33216.1256169349. The cubic root of 1103311001 is about 1033.3147993785.

Adding to 1103311001 its reverse (1001133011), we get a palindrome (2104444012).

The spelling of 1103311001 in words is "one billion, one hundred three million, three hundred eleven thousand, one".