31880104349 has 2 divisors, whose sum is σ = 31880104350. Its totient is φ = 31880104348.

The previous prime is 31880104343. The next prime is 31880104357. The reversal of 31880104349 is 94340108813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31880102500 + 1849 = 178550^2 + 43^2 .

It is an emirp because it is prime and its reverse (94340108813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31880104349 - 2³² = 27585137053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31880104343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15940052174 + 15940052175.

It is an arithmetic number, because the mean of its divisors is an integer number (15940052175).

Almost surely, 2^31880104349 is an apocalyptic number.

It is an amenable number.

31880104349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31880104349 is an equidigital number, since it uses as much as digits as its factorization.

31880104349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 31880104349 in words is "thirty-one billion, eight hundred eighty million, one hundred four thousand, three hundred forty-nine".