31231321031327 has 2 divisors, whose sum is σ = 31231321031328. Its totient is φ = 31231321031326.

The previous prime is 31231321031249. The next prime is 31231321031353. The reversal of 31231321031327 is 72313012313213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31231321031327 - 2¹⁸ = 31231320769183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31231321031293 and 31231321031302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231321031527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615660515663 + 15615660515664.

It is an arithmetic number, because the mean of its divisors is an integer number (15615660515664).

Almost surely, 2^{31231321031327} is an apocalyptic number.

31231321031327 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231321031327 is an equidigital number, since it uses as much as digits as its factorization.

31231321031327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The spelling of 31231321031327 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-one million, thirty-one thousand, three hundred twenty-seven".