31321013321449 has 2 divisors, whose sum is σ = 31321013321450. Its totient is φ = 31321013321448.

The previous prime is 31321013321383. The next prime is 31321013321467. The reversal of 31321013321449 is 94412331012313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22249664472025 + 9071348849424 = 4716955^2 + 3011868^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321013321449 - 2⁹ = 31321013320937 is a prime.

It is not a weakly prime, because it can be changed into another prime (31321013321149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660506660724 + 15660506660725.

It is an arithmetic number, because the mean of its divisors is an integer number (15660506660725).

Almost surely, 2^{31321013321449} is an apocalyptic number.

It is an amenable number.

31321013321449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321013321449 is an equidigital number, since it uses as much as digits as its factorization.

31321013321449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 31321013321449 in words is "thirty-one trillion, three hundred twenty-one billion, thirteen million, three hundred twenty-one thousand, four hundred forty-nine".