31442424049 has 2 divisors, whose sum is σ = 31442424050. Its totient is φ = 31442424048.

The previous prime is 31442424047. The next prime is 31442424089. The reversal of 31442424049 is 94042424413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31081690000 + 360734049 = 176300^2 + 18993^2 .

It is a cyclic number.

It is not a de Polignac number, because 31442424049 - 2¹ = 31442424047 is a prime.

Together with 31442424047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31442423999 and 31442424017.

It is not a weakly prime, because it can be changed into another prime (31442424047) 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, 15721212024 + 15721212025.

It is an arithmetic number, because the mean of its divisors is an integer number (15721212025).

Almost surely, 2^31442424049 is an apocalyptic number.

It is an amenable number.

31442424049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442424049 is an equidigital number, since it uses as much as digits as its factorization.

31442424049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 31442424049 in words is "thirty-one billion, four hundred forty-two million, four hundred twenty-four thousand, forty-nine".