31442124349 has 2 divisors, whose sum is σ = 31442124350. Its totient is φ = 31442124348.

The previous prime is 31442124323. The next prime is 31442124353. The reversal of 31442124349 is 94342124413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31079221849 + 362902500 = 176293^2 + 19050^2 .

It is a cyclic number.

It is not a de Polignac number, because 31442124349 - 2⁵ = 31442124317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31442125349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721062174 + 15721062175.

It is an arithmetic number, because the mean of its divisors is an integer number (15721062175).

Almost surely, 2^31442124349 is an apocalyptic number.

It is an amenable number.

31442124349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442124349 is an equidigital number, since it uses as much as digits as its factorization.

31442124349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The spelling of 31442124349 in words is "thirty-one billion, four hundred forty-two million, one hundred twenty-four thousand, three hundred forty-nine".