1313123112203 has 16 divisors (see below), whose sum is σ = 1511433303744. Its totient is φ = 1117504252800.

The previous prime is 1313123112199. The next prime is 1313123112209. The reversal of 1313123112203 is 3022113213131.

It is a cyclic number.

It is not a de Polignac number, because 1313123112203 - 2² = 1313123112199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313123112209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970601 + ... + 1888997.

It is an arithmetic number, because the mean of its divisors is an integer number (94464581484).

Almost surely, 2^{1313123112203} is an apocalyptic number.

1313123112203 is a deficient number, since it is larger than the sum of its proper divisors (198310191541).

1313123112203 is a wasteful number, since it uses less digits than its factorization.

1313123112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919862.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1313123112203 its reverse (3022113213131), we get a palindrome (4335236325334).

The spelling of 1313123112203 in words is "one trillion, three hundred thirteen billion, one hundred twenty-three million, one hundred twelve thousand, two hundred three".