1313130221231 has 4 divisors (see below), whose sum is σ = 1313135165112. Its totient is φ = 1313125277352.

The previous prime is 1313130221191. The next prime is 1313130221321. The reversal of 1313130221231 is 1321220313131.

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 1313130221231 - 2⁶ = 1313130221167 is a prime.

It is a super-2 number, since 2×1313130221231² (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 = 1313130221197 and 1313130221206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313130221531) 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, 2049461 + ... + 2612766.

It is an arithmetic number, because the mean of its divisors is an integer number (328283791278).

Almost surely, 2^{1313130221231} is an apocalyptic number.

1313130221231 is a deficient number, since it is larger than the sum of its proper divisors (4943881).

1313130221231 is an equidigital number, since it uses as much as digits as its factorization.

1313130221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943880.

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

Adding to 1313130221231 its reverse (1321220313131), we get a palindrome (2634350534362).

The spelling of 1313130221231 in words is "one trillion, three hundred thirteen billion, one hundred thirty million, two hundred twenty-one thousand, two hundred thirty-one".