31155124853 has 2 divisors, whose sum is σ = 31155124854. Its totient is φ = 31155124852.

The previous prime is 31155124843. The next prime is 31155124901. The reversal of 31155124853 is 35842155113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17693788324 + 13461336529 = 133018^2 + 116023^2 .

It is a cyclic number.

It is not a de Polignac number, because 31155124853 - 2¹² = 31155120757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31155124843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15577562426 + 15577562427.

It is an arithmetic number, because the mean of its divisors is an integer number (15577562427).

Almost surely, 2^31155124853 is an apocalyptic number.

It is an amenable number.

31155124853 is a deficient number, since it is larger than the sum of its proper divisors (1).

31155124853 is an equidigital number, since it uses as much as digits as its factorization.

31155124853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 38.

Adding to 31155124853 its reverse (35842155113), we get a palindrome (66997279966).

The spelling of 31155124853 in words is "thirty-one billion, one hundred fifty-five million, one hundred twenty-four thousand, eight hundred fifty-three".