1313255661403 has 12 divisors (see below), whose sum is σ = 1527683829672. Its totient is φ = 1125633650400.

The previous prime is 1313255661383. The next prime is 1313255661433. The reversal of 1313255661403 is 3041665523131.

It is not a de Polignac number, because 1313255661403 - 2²⁹ = 1312718790491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313255661433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6393703 + ... + 6595903.

It is an arithmetic number, because the mean of its divisors is an integer number (127306985806).

Almost surely, 2^{1313255661403} is an apocalyptic number.

1313255661403 is a deficient number, since it is larger than the sum of its proper divisors (214428168269).

1313255661403 is a wasteful number, since it uses less digits than its factorization.

1313255661403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334762 (or 334755 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 1313255661403 in words is "one trillion, three hundred thirteen billion, two hundred fifty-five million, six hundred sixty-one thousand, four hundred three".