1305401034403 has 4 divisors (see below), whose sum is σ = 1305825006640. Its totient is φ = 1304977062168.

The previous prime is 1305401034383. The next prime is 1305401034437. The reversal of 1305401034403 is 3044301045031.

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-1305401034403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305401034463) 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, 211981500 + ... + 211987657.

It is an arithmetic number, because the mean of its divisors is an integer number (326456251660).

Almost surely, 2^{1305401034403} is an apocalyptic number.

1305401034403 is a deficient number, since it is larger than the sum of its proper divisors (423972237).

1305401034403 is an equidigital number, since it uses as much as digits as its factorization.

1305401034403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423972236.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 1305401034403 its reverse (3044301045031), we get a palindrome (4349702079434).

The spelling of 1305401034403 in words is "one trillion, three hundred five billion, four hundred one million, thirty-four thousand, four hundred three".