231231232307 has 2 divisors, whose sum is σ = 231231232308. Its totient is φ = 231231232306.

The previous prime is 231231232261. The next prime is 231231232333. The reversal of 231231232307 is 703232132132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231231232307 - 2²⁸ = 230962796851 is a prime.

It is a super-3 number, since 3×231231232307³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231231232307.

It is not a weakly prime, because it can be changed into another prime (231231232357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115615616153 + 115615616154.

It is an arithmetic number, because the mean of its divisors is an integer number (115615616154).

Almost surely, 2^231231232307 is an apocalyptic number.

231231232307 is a deficient number, since it is larger than the sum of its proper divisors (1).

231231232307 is an equidigital number, since it uses as much as digits as its factorization.

231231232307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 29.

Adding to 231231232307 its reverse (703232132132), we get a palindrome (934463364439).

The spelling of 231231232307 in words is "two hundred thirty-one billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred seven".