31148987234579 has 2 divisors, whose sum is σ = 31148987234580. Its totient is φ = 31148987234578.

The previous prime is 31148987234551. The next prime is 31148987234621. The reversal of 31148987234579 is 97543278984113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31148987234579 - 2⁴⁰ = 30049475606803 is a prime.

It is not a weakly prime, because it can be changed into another prime (31148987234509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15574493617289 + 15574493617290.

It is an arithmetic number, because the mean of its divisors is an integer number (15574493617290).

Almost surely, 2^{31148987234579} is an apocalyptic number.

31148987234579 is a deficient number, since it is larger than the sum of its proper divisors (1).

31148987234579 is an equidigital number, since it uses as much as digits as its factorization.

31148987234579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 71.

The spelling of 31148987234579 in words is "thirty-one trillion, one hundred forty-eight billion, nine hundred eighty-seven million, two hundred thirty-four thousand, five hundred seventy-nine".