31100043349 has 2 divisors, whose sum is σ = 31100043350. Its totient is φ = 31100043348.

The previous prime is 31100043347. The next prime is 31100043409. The reversal of 31100043349 is 94334000113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31088037124 + 12006225 = 176318^2 + 3465^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100043349 - 2¹ = 31100043347 is a prime.

Together with 31100043347, 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 (31100043347) 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, 15550021674 + 15550021675.

It is an arithmetic number, because the mean of its divisors is an integer number (15550021675).

Almost surely, 2^31100043349 is an apocalyptic number.

It is an amenable number.

31100043349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100043349 is an equidigital number, since it uses as much as digits as its factorization.

31100043349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 31100043349 in words is "thirty-one billion, one hundred million, forty-three thousand, three hundred forty-nine".