231320222407 has 2 divisors, whose sum is σ = 231320222408. Its totient is φ = 231320222406.

The previous prime is 231320222389. The next prime is 231320222443. The reversal of 231320222407 is 704222023132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231320222407 - 2¹⁹ = 231319698119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231320220407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115660111203 + 115660111204.

It is an arithmetic number, because the mean of its divisors is an integer number (115660111204).

Almost surely, 2^231320222407 is an apocalyptic number.

231320222407 is a deficient number, since it is larger than the sum of its proper divisors (1).

231320222407 is an equidigital number, since it uses as much as digits as its factorization.

231320222407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 231320222407 its reverse (704222023132), we get a palindrome (935542245539).

The spelling of 231320222407 in words is "two hundred thirty-one billion, three hundred twenty million, two hundred twenty-two thousand, four hundred seven".