231321022307 has 2 divisors, whose sum is σ = 231321022308. Its totient is φ = 231321022306.

The previous prime is 231321022267. The next prime is 231321022381. The reversal of 231321022307 is 703220123132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231321022307 - 2⁶ = 231321022243 is a prime.

It is a super-2 number, since 2×231321022307² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231321022397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115660511153 + 115660511154.

It is an arithmetic number, because the mean of its divisors is an integer number (115660511154).

Almost surely, 2^231321022307 is an apocalyptic number.

231321022307 is a deficient number, since it is larger than the sum of its proper divisors (1).

231321022307 is an equidigital number, since it uses as much as digits as its factorization.

231321022307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 231321022307 its reverse (703220123132), we get a palindrome (934541145439).

The spelling of 231321022307 in words is "two hundred thirty-one billion, three hundred twenty-one million, twenty-two thousand, three hundred seven".