331312231231 has 2 divisors, whose sum is σ = 331312231232. Its totient is φ = 331312231230.

The previous prime is 331312231193. The next prime is 331312231241. The reversal of 331312231231 is 132132213133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331312231231 - 2²⁹ = 330775360319 is a prime.

It is a super-2 number, since 2×331312231231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331312231196 and 331312231205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331312231241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165656115615 + 165656115616.

It is an arithmetic number, because the mean of its divisors is an integer number (165656115616).

Almost surely, 2^331312231231 is an apocalyptic number.

331312231231 is a deficient number, since it is larger than the sum of its proper divisors (1).

331312231231 is an equidigital number, since it uses as much as digits as its factorization.

331312231231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 25.

Adding to 331312231231 its reverse (132132213133), we get a palindrome (463444444364).

The spelling of 331312231231 in words is "three hundred thirty-one billion, three hundred twelve million, two hundred thirty-one thousand, two hundred thirty-one".