131213113321 has 2 divisors, whose sum is σ = 131213113322. Its totient is φ = 131213113320.

The previous prime is 131213113279. The next prime is 131213113337. The reversal of 131213113321 is 123311312131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104509958400 + 26703154921 = 323280^2 + 163411^2 .

It is a cyclic number.

It is not a de Polignac number, because 131213113321 - 2⁹ = 131213112809 is a prime.

It is a super-2 number, since 2×131213113321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131213113292 and 131213113301.

It is not a weakly prime, because it can be changed into another prime (131213113391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606556660 + 65606556661.

It is an arithmetic number, because the mean of its divisors is an integer number (65606556661).

Almost surely, 2^131213113321 is an apocalyptic number.

It is an amenable number.

131213113321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131213113321 is an equidigital number, since it uses as much as digits as its factorization.

131213113321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 22.

Adding to 131213113321 its reverse (123311312131), we get a palindrome (254524425452).

The spelling of 131213113321 in words is "one hundred thirty-one billion, two hundred thirteen million, one hundred thirteen thousand, three hundred twenty-one".