1313330221031 has 4 divisors (see below), whose sum is σ = 1355695712064. Its totient is φ = 1270964730000.

The previous prime is 1313330221001. The next prime is 1313330221051. The reversal of 1313330221031 is 1301220333131.

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 1313330221031 - 2⁶ = 1313330220967 is a prime.

It is a super-2 number, since 2×1313330221031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313330220988 and 1313330221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313330221001) 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, 21182745470 + ... + 21182745531.

It is an arithmetic number, because the mean of its divisors is an integer number (338923928016).

Almost surely, 2^{1313330221031} is an apocalyptic number.

1313330221031 is a deficient number, since it is larger than the sum of its proper divisors (42365491033).

1313330221031 is an equidigital number, since it uses as much as digits as its factorization.

1313330221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42365491032.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1313330221031 its reverse (1301220333131), we get a palindrome (2614550554162).

The spelling of 1313330221031 in words is "one trillion, three hundred thirteen billion, three hundred thirty million, two hundred twenty-one thousand, thirty-one".