31301002242121 has 2 divisors, whose sum is σ = 31301002242122. Its totient is φ = 31301002242120.

The previous prime is 31301002242109. The next prime is 31301002242197. The reversal of 31301002242121 is 12124220010313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26206321262521 + 5094680979600 = 5119211^2 + 2257140^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301002242121 - 2¹⁹ = 31301001717833 is a prime.

It is a super-2 number, since 2×31301002242121² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31301002242092 and 31301002242101.

It is not a weakly prime, because it can be changed into another prime (31301002242101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650501121060 + 15650501121061.

It is an arithmetic number, because the mean of its divisors is an integer number (15650501121061).

Almost surely, 2^{31301002242121} is an apocalyptic number.

It is an amenable number.

31301002242121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301002242121 is an equidigital number, since it uses as much as digits as its factorization.

31301002242121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31301002242121 its reverse (12124220010313), we get a palindrome (43425222252434).

The spelling of 31301002242121 in words is "thirty-one trillion, three hundred one billion, two million, two hundred forty-two thousand, one hundred twenty-one".