1313121223231 has 8 divisors (see below), whose sum is σ = 1371321170784. Its totient is φ = 1255013585760.

The previous prime is 1313121223229. The next prime is 1313121223241. The reversal of 1313121223231 is 1323221213131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313121223231 - 2¹ = 1313121223229 is a prime.

It is a super-2 number, since 2×1313121223231² (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 = 1313121223196 and 1313121223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313121223241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23048440 + ... + 23105341.

It is an arithmetic number, because the mean of its divisors is an integer number (171415146348).

Almost surely, 2^{1313121223231} is an apocalyptic number.

1313121223231 is a deficient number, since it is larger than the sum of its proper divisors (58199947553).

1313121223231 is a wasteful number, since it uses less digits than its factorization.

1313121223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46155041.

The product of its digits is 1296, while the sum is 25.

Adding to 1313121223231 its reverse (1323221213131), we get a palindrome (2636342436362).

The spelling of 1313121223231 in words is "one trillion, three hundred thirteen billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred thirty-one".