1313320131321 has 32 divisors (see below), whose sum is σ = 1914589550592. Its totient is φ = 794159583360.

The previous prime is 1313320131293. The next prime is 1313320131323. The reversal of 1313320131321 is 1231310233131.

It is not a de Polignac number, because 1313320131321 - 2⁶ = 1313320131257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313320131291 and 1313320131300.

It is not an unprimeable number, because it can be changed into a prime (1313320131323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26672701 + ... + 26721893.

It is an arithmetic number, because the mean of its divisors is an integer number (59830923456).

Almost surely, 2^{1313320131321} is an apocalyptic number.

1313320131321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1313320131321 is a deficient number, since it is larger than the sum of its proper divisors (601269419271).

1313320131321 is a wasteful number, since it uses less digits than its factorization.

1313320131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51013.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1313320131321 its reverse (1231310233131), we get a palindrome (2544630364452).

The spelling of 1313320131321 in words is "one trillion, three hundred thirteen billion, three hundred twenty million, one hundred thirty-one thousand, three hundred twenty-one".