31201014121 has 2 divisors, whose sum is σ = 31201014122. Its totient is φ = 31201014120.

The previous prime is 31201014007. The next prime is 31201014133. The reversal of 31201014121 is 12141010213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28581621721 + 2619392400 = 169061^2 + 51180^2 .

It is a cyclic number.

It is not a de Polignac number, because 31201014121 - 2¹⁹ = 31200489833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31201014095 and 31201014104.

It is not a weakly prime, because it can be changed into another prime (31201024121) 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, 15600507060 + 15600507061.

It is an arithmetic number, because the mean of its divisors is an integer number (15600507061).

Almost surely, 2^31201014121 is an apocalyptic number.

It is an amenable number.

31201014121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31201014121 is an equidigital number, since it uses as much as digits as its factorization.

31201014121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31201014121 its reverse (12141010213), we get a palindrome (43342024334).

The spelling of 31201014121 in words is "thirty-one billion, two hundred one million, fourteen thousand, one hundred twenty-one".