31326535236851 has 2 divisors, whose sum is σ = 31326535236852. Its totient is φ = 31326535236850.

The previous prime is 31326535236839. The next prime is 31326535236881. The reversal of 31326535236851 is 15863253562313.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31326535236851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31326535236793 and 31326535236802.

It is not a weakly prime, because it can be changed into another prime (31326535236881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15663267618425 + 15663267618426.

It is an arithmetic number, because the mean of its divisors is an integer number (15663267618426).

Almost surely, 2^{31326535236851} is an apocalyptic number.

31326535236851 is a deficient number, since it is larger than the sum of its proper divisors (1).

31326535236851 is an equidigital number, since it uses as much as digits as its factorization.

31326535236851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664000, while the sum is 53.

The spelling of 31326535236851 in words is "thirty-one trillion, three hundred twenty-six billion, five hundred thirty-five million, two hundred thirty-six thousand, eight hundred fifty-one".