31132312327 has 2 divisors, whose sum is σ = 31132312328. Its totient is φ = 31132312326.

The previous prime is 31132312297. The next prime is 31132312333. The reversal of 31132312327 is 72321323113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31132312327 - 2⁷ = 31132312199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31132312295 and 31132312304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31132312727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566156163 + 15566156164.

It is an arithmetic number, because the mean of its divisors is an integer number (15566156164).

Almost surely, 2^31132312327 is an apocalyptic number.

31132312327 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132312327 is an equidigital number, since it uses as much as digits as its factorization.

31132312327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The spelling of 31132312327 in words is "thirty-one billion, one hundred thirty-two million, three hundred twelve thousand, three hundred twenty-seven".