1311301003 has 4 divisors (see below), whose sum is σ = 1316742328. Its totient is φ = 1305859680.

The previous prime is 1311300983. The next prime is 1311301007. The reversal of 1311301003 is 3001031131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311301003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311301007) 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, 2720301 + ... + 2720782.

It is an arithmetic number, because the mean of its divisors is an integer number (329185582).

Almost surely, 2^1311301003 is an apocalyptic number.

1311301003 is a deficient number, since it is larger than the sum of its proper divisors (5441325).

1311301003 is an equidigital number, since it uses as much as digits as its factorization.

1311301003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441324.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1311301003 is about 36211.8903538603. The cubic root of 1311301003 is about 1094.5462846483.

Adding to 1311301003 its reverse (3001031131), we get a palindrome (4312332134).

The spelling of 1311301003 in words is "one billion, three hundred eleven million, three hundred one thousand, three".