31320323085829 has 2 divisors, whose sum is σ = 31320323085830. Its totient is φ = 31320323085828.

The previous prime is 31320323085827. The next prime is 31320323085889. The reversal of 31320323085829 is 92858032302313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25774933917604 + 5545389168225 = 5076902^2 + 2354865^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320323085829 - 2¹ = 31320323085827 is a prime.

It is a super-3 number, since 3×31320323085829³ (a number of 41 digits) contains 333 as substring.

Together with 31320323085827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31320323085823) 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, 15660161542914 + 15660161542915.

It is an arithmetic number, because the mean of its divisors is an integer number (15660161542915).

Almost surely, 2^{31320323085829} is an apocalyptic number.

It is an amenable number.

31320323085829 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320323085829 is an equidigital number, since it uses as much as digits as its factorization.

31320323085829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 31320323085829 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-three million, eighty-five thousand, eight hundred twenty-nine".