31301332021121 has 2 divisors, whose sum is σ = 31301332021122. Its totient is φ = 31301332021120.

The previous prime is 31301332021109. The next prime is 31301332021181. The reversal of 31301332021121 is 12112023310313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30255621261121 + 1045710760000 = 5500511^2 + 1022600^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301332021121 - 2³⁴ = 31284152151937 is a prime.

It is not a weakly prime, because it can be changed into another prime (31301332021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650666010560 + 15650666010561.

It is an arithmetic number, because the mean of its divisors is an integer number (15650666010561).

Almost surely, 2^{31301332021121} is an apocalyptic number.

It is an amenable number.

31301332021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301332021121 is an equidigital number, since it uses as much as digits as its factorization.

31301332021121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31301332021121 its reverse (12112023310313), we get a palindrome (43413355331434).

The spelling of 31301332021121 in words is "thirty-one trillion, three hundred one billion, three hundred thirty-two million, twenty-one thousand, one hundred twenty-one".