231130013321 has 2 divisors, whose sum is σ = 231130013322. Its totient is φ = 231130013320.

The previous prime is 231130013281. The next prime is 231130013339. The reversal of 231130013321 is 123310031132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227467948096 + 3662065225 = 476936^2 + 60515^2 .

It is a cyclic number.

It is not a de Polignac number, because 231130013321 - 2¹⁰ = 231130012297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231130013293 and 231130013302.

It is not a weakly prime, because it can be changed into another prime (231130015321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115565006660 + 115565006661.

It is an arithmetic number, because the mean of its divisors is an integer number (115565006661).

Almost surely, 2^231130013321 is an apocalyptic number.

It is an amenable number.

231130013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

231130013321 is an equidigital number, since it uses as much as digits as its factorization.

231130013321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231130013321 its reverse (123310031132), we get a palindrome (354440044453).

The spelling of 231130013321 in words is "two hundred thirty-one billion, one hundred thirty million, thirteen thousand, three hundred twenty-one".