31213542330135 has 96 divisors (see below), whose sum is σ = 59375763720000. Its totient is φ = 15043388497920.

The previous prime is 31213542330133. The next prime is 31213542330167. The reversal of 31213542330135 is 53103324531213.

31213542330135 is a `hidden beast` number, since 3 + 1 + 213 + 5 + 423 + 3 + 0 + 13 + 5 = 666.

It is not a de Polignac number, because 31213542330135 - 2¹ = 31213542330133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31213542330135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213542330133) 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 in 95 ways as a sum of consecutive naturals, for example, 56141991 + ... + 56695239.

It is an arithmetic number, because the mean of its divisors is an integer number (618497538750).

Almost surely, 2^{31213542330135} is an apocalyptic number.

31213542330135 is a deficient number, since it is larger than the sum of its proper divisors (28162221389865).

31213542330135 is a wasteful number, since it uses less digits than its factorization.

31213542330135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553953 (or 553950 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 31213542330135 its reverse (53103324531213), we get a palindrome (84316866861348).

The spelling of 31213542330135 in words is "thirty-one trillion, two hundred thirteen billion, five hundred forty-two million, three hundred thirty thousand, one hundred thirty-five".