1313355403 has 2 divisors, whose sum is σ = 1313355404. Its totient is φ = 1313355402.

The previous prime is 1313355401. The next prime is 1313355413. The reversal of 1313355403 is 3045533131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3045533131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313355403 - 2¹ = 1313355401 is a prime.

Together with 1313355401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1313355401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656677701 + 656677702.

It is an arithmetic number, because the mean of its divisors is an integer number (656677702).

Almost surely, 2^1313355403 is an apocalyptic number.

1313355403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313355403 is an equidigital number, since it uses as much as digits as its factorization.

1313355403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 1313355403 is about 36240.2456255473. The cubic root of 1313355403 is about 1095.1175907021.

Adding to 1313355403 its reverse (3045533131), we get a palindrome (4358888534).

The spelling of 1313355403 in words is "one billion, three hundred thirteen million, three hundred fifty-five thousand, four hundred three".