1305631641003 has 4 divisors (see below), whose sum is σ = 1740842188008. Its totient is φ = 870421094000.

The previous prime is 1305631640993. The next prime is 1305631641007. The reversal of 1305631641003 is 3001461365031.

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

It is a cyclic number.

It is not a de Polignac number, because 1305631641003 - 2³⁷ = 1168192687531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305631641007) 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, 217605273498 + ... + 217605273503.

It is an arithmetic number, because the mean of its divisors is an integer number (435210547002).

Almost surely, 2^{1305631641003} is an apocalyptic number.

1305631641003 is a deficient number, since it is larger than the sum of its proper divisors (435210547005).

1305631641003 is an equidigital number, since it uses as much as digits as its factorization.

1305631641003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435210547004.

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 1305631641003 in words is "one trillion, three hundred five billion, six hundred thirty-one million, six hundred forty-one thousand, three".