31321011349 has 2 divisors, whose sum is σ = 31321011350. Its totient is φ = 31321011348.

The previous prime is 31321011313. The next prime is 31321011391. The reversal of 31321011349 is 94311012313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23363122500 + 7957888849 = 152850^2 + 89207^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321011349 - 2⁹ = 31321010837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321011049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660505674 + 15660505675.

It is an arithmetic number, because the mean of its divisors is an integer number (15660505675).

Almost surely, 2^31321011349 is an apocalyptic number.

It is an amenable number.

31321011349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321011349 is an equidigital number, since it uses as much as digits as its factorization.

31321011349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 31321011349 in words is "thirty-one billion, three hundred twenty-one million, eleven thousand, three hundred forty-nine".