1313203402423 has 4 divisors (see below), whose sum is σ = 1432585529928. Its totient is φ = 1193821274920.

The previous prime is 1313203402373. The next prime is 1313203402429. The reversal of 1313203402423 is 3242043023131.

It is a happy number.

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 1313203402423 - 2¹⁷ = 1313203271351 is a prime.

It is a super-2 number, since 2×1313203402423² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313203402391 and 1313203402400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313203402429) 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, 59691063736 + ... + 59691063757.

It is an arithmetic number, because the mean of its divisors is an integer number (358146382482).

Almost surely, 2^{1313203402423} is an apocalyptic number.

1313203402423 is a deficient number, since it is larger than the sum of its proper divisors (119382127505).

1313203402423 is a wasteful number, since it uses less digits than its factorization.

1313203402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119382127504.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1313203402423 its reverse (3242043023131), we get a palindrome (4555246425554).

The spelling of 1313203402423 in words is "one trillion, three hundred thirteen billion, two hundred three million, four hundred two thousand, four hundred twenty-three".