31121426254579 has 2 divisors, whose sum is σ = 31121426254580. Its totient is φ = 31121426254578.

The previous prime is 31121426254561. The next prime is 31121426254661. The reversal of 31121426254579 is 97545262412113.

It is a weak prime.

It is an emirp because it is prime and its reverse (97545262412113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31121426254579 - 2¹³ = 31121426246387 is a prime.

It is not a weakly prime, because it can be changed into another prime (31121426254519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560713127289 + 15560713127290.

It is an arithmetic number, because the mean of its divisors is an integer number (15560713127290).

Almost surely, 2^{31121426254579} is an apocalyptic number.

31121426254579 is a deficient number, since it is larger than the sum of its proper divisors (1).

31121426254579 is an equidigital number, since it uses as much as digits as its factorization.

31121426254579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 52.

The spelling of 31121426254579 in words is "thirty-one trillion, one hundred twenty-one billion, four hundred twenty-six million, two hundred fifty-four thousand, five hundred seventy-nine".