331243250231 has 2 divisors, whose sum is σ = 331243250232. Its totient is φ = 331243250230.

The previous prime is 331243250227. The next prime is 331243250251. The reversal of 331243250231 is 132052342133.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331243250231 - 2² = 331243250227 is a prime.

It is a super-2 number, since 2×331243250231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331243250194 and 331243250203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331243250251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165621625115 + 165621625116.

It is an arithmetic number, because the mean of its divisors is an integer number (165621625116).

Almost surely, 2^331243250231 is an apocalyptic number.

331243250231 is a deficient number, since it is larger than the sum of its proper divisors (1).

331243250231 is an equidigital number, since it uses as much as digits as its factorization.

331243250231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 331243250231 its reverse (132052342133), we get a palindrome (463295592364).

The spelling of 331243250231 in words is "three hundred thirty-one billion, two hundred forty-three million, two hundred fifty thousand, two hundred thirty-one".