31104611640121 has 2 divisors, whose sum is σ = 31104611640122. Its totient is φ = 31104611640120.

The previous prime is 31104611640019. The next prime is 31104611640163. The reversal of 31104611640121 is 12104611640113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24758187577600 + 6346424062521 = 4975760^2 + 2519211^2 .

It is a cyclic number.

It is not a de Polignac number, because 31104611640121 - 2²⁵ = 31104578085689 is a prime.

It is not a weakly prime, because it can be changed into another prime (31104611644121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552305820060 + 15552305820061.

It is an arithmetic number, because the mean of its divisors is an integer number (15552305820061).

Almost surely, 2^{31104611640121} is an apocalyptic number.

It is an amenable number.

31104611640121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31104611640121 is an equidigital number, since it uses as much as digits as its factorization.

31104611640121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 31104611640121 in words is "thirty-one trillion, one hundred four billion, six hundred eleven million, six hundred forty thousand, one hundred twenty-one".