1311003445 has 8 divisors (see below), whose sum is σ = 1573573536. Its totient is φ = 1048556496.

The previous prime is 1311003409. The next prime is 1311003457. The reversal of 1311003445 is 5443001131.

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 1311003445 - 2¹¹ = 1311001397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5467 + ... + 51496.

It is an arithmetic number, because the mean of its divisors is an integer number (196696692).

Almost surely, 2^1311003445 is an apocalyptic number.

It is an amenable number.

1311003445 is a deficient number, since it is larger than the sum of its proper divisors (262570091).

1311003445 is an equidigital number, since it uses as much as digits as its factorization.

1311003445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61571.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1311003445 is about 36207.7815531413. The cubic root of 1311003445 is about 1094.4634875786.

Adding to 1311003445 its reverse (5443001131), we get a palindrome (6754004576).

The spelling of 1311003445 in words is "one billion, three hundred eleven million, three thousand, four hundred forty-five".