31230411430121 has 2 divisors, whose sum is σ = 31230411430122. Its totient is φ = 31230411430120.

The previous prime is 31230411430109. The next prime is 31230411430177. The reversal of 31230411430121 is 12103411403213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29692265781721 + 1538145648400 = 5449061^2 + 1240220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31230411430121 is a prime.

It is not a weakly prime, because it can be changed into another prime (31230411430181) 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, 15615205715060 + 15615205715061.

It is an arithmetic number, because the mean of its divisors is an integer number (15615205715061).

Almost surely, 2^{31230411430121} is an apocalyptic number.

It is an amenable number.

31230411430121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230411430121 is an equidigital number, since it uses as much as digits as its factorization.

31230411430121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31230411430121 its reverse (12103411403213), we get a palindrome (43333822833334).

The spelling of 31230411430121 in words is "thirty-one trillion, two hundred thirty billion, four hundred eleven million, four hundred thirty thousand, one hundred twenty-one".