31867006349 has 2 divisors, whose sum is σ = 31867006350. Its totient is φ = 31867006348.

The previous prime is 31867006331. The next prime is 31867006361. The reversal of 31867006349 is 94360076813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30339369124 + 1527637225 = 174182^2 + 39085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31867006349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31867006319) 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, 15933503174 + 15933503175.

It is an arithmetic number, because the mean of its divisors is an integer number (15933503175).

Almost surely, 2^31867006349 is an apocalyptic number.

It is an amenable number.

31867006349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31867006349 is an equidigital number, since it uses as much as digits as its factorization.

31867006349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 31867006349 in words is "thirty-one billion, eight hundred sixty-seven million, six thousand, three hundred forty-nine".