31313442101 has 2 divisors, whose sum is σ = 31313442102. Its totient is φ = 31313442100.

The previous prime is 31313442089. The next prime is 31313442107. The reversal of 31313442101 is 10124431313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30284700625 + 1028741476 = 174025^2 + 32074^2 .

It is a cyclic number.

It is not a de Polignac number, because 31313442101 - 2³⁰ = 30239700277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31313442107) 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, 15656721050 + 15656721051.

It is an arithmetic number, because the mean of its divisors is an integer number (15656721051).

Almost surely, 2^31313442101 is an apocalyptic number.

It is an amenable number.

31313442101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313442101 is an equidigital number, since it uses as much as digits as its factorization.

31313442101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31313442101 its reverse (10124431313), we get a palindrome (41437873414).

The spelling of 31313442101 in words is "thirty-one billion, three hundred thirteen million, four hundred forty-two thousand, one hundred one".