31123304034577 has 2 divisors, whose sum is σ = 31123304034578. Its totient is φ = 31123304034576.

The previous prime is 31123304034533. The next prime is 31123304034583. The reversal of 31123304034577 is 77543040332113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30325826458321 + 797477576256 = 5506889^2 + 893016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31123304034577 is a prime.

It is not a weakly prime, because it can be changed into another prime (31123304034527) 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, 15561652017288 + 15561652017289.

It is an arithmetic number, because the mean of its divisors is an integer number (15561652017289).

Almost surely, 2^{31123304034577} is an apocalyptic number.

It is an amenable number.

31123304034577 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123304034577 is an equidigital number, since it uses as much as digits as its factorization.

31123304034577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 31123304034577 in words is "thirty-one trillion, one hundred twenty-three billion, three hundred four million, thirty-four thousand, five hundred seventy-seven".