1301312303 has 4 divisors (see below), whose sum is σ = 1301647440. Its totient is φ = 1300977168.

The previous prime is 1301312281. The next prime is 1301312321. The reversal of 1301312303 is 3032131031.

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-1301312303 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 (1301312333) 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, 161675 + ... + 169532.

It is an arithmetic number, because the mean of its divisors is an integer number (325411860).

Almost surely, 2^1301312303 is an apocalyptic number.

1301312303 is a deficient number, since it is larger than the sum of its proper divisors (335137).

1301312303 is an equidigital number, since it uses as much as digits as its factorization.

1301312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335136.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1301312303 is about 36073.7065325979. The cubic root of 1301312303 is about 1091.7600001108.

Adding to 1301312303 its reverse (3032131031), we get a palindrome (4333443334).

The spelling of 1301312303 in words is "one billion, three hundred one million, three hundred twelve thousand, three hundred three".