31231131133327 has 2 divisors, whose sum is σ = 31231131133328. Its totient is φ = 31231131133326.

The previous prime is 31231131133313. The next prime is 31231131133333. The reversal of 31231131133327 is 72333113113213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31231131133327 - 2²³ = 31231122744719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31231131133292 and 31231131133301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231131133337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615565566663 + 15615565566664.

It is an arithmetic number, because the mean of its divisors is an integer number (15615565566664).

Almost surely, 2^{31231131133327} is an apocalyptic number.

31231131133327 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231131133327 is an equidigital number, since it uses as much as digits as its factorization.

31231131133327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 34.

The spelling of 31231131133327 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred thirty-one million, one hundred thirty-three thousand, three hundred twenty-seven".