1331345032403 has 4 divisors (see below), whose sum is σ = 1332075338688. Its totient is φ = 1330614726120.

The previous prime is 1331345032387. The next prime is 1331345032411. The reversal of 1331345032403 is 3042305431331.

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 1331345032403 - 2⁴ = 1331345032387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331345032403.

It is not an unprimeable number, because it can be changed into a prime (1331345032453) 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, 365150408 + ... + 365154053.

It is an arithmetic number, because the mean of its divisors is an integer number (333018834672).

Almost surely, 2^{1331345032403} is an apocalyptic number.

1331345032403 is a deficient number, since it is larger than the sum of its proper divisors (730306285).

1331345032403 is an equidigital number, since it uses as much as digits as its factorization.

1331345032403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730306284.

The product of its (nonzero) digits is 38880, while the sum is 32.

The spelling of 1331345032403 in words is "one trillion, three hundred thirty-one billion, three hundred forty-five million, thirty-two thousand, four hundred three".