31542135522 has 32 divisors (see below), whose sum is σ = 63594683712. Its totient is φ = 10429292544.

The previous prime is 31542135509. The next prime is 31542135523. The reversal of 31542135522 is 22553124513.

It is not an unprimeable number, because it can be changed into a prime (31542135523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362578 + ... + 441074.

It is an arithmetic number, because the mean of its divisors is an integer number (1987333866).

Almost surely, 2^31542135522 is an apocalyptic number.

31542135522 is an abundant number, since it is smaller than the sum of its proper divisors (32052548190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31542135522 is a wasteful number, since it uses less digits than its factorization.

31542135522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79042.

The product of its digits is 36000, while the sum is 33.

The spelling of 31542135522 in words is "thirty-one billion, five hundred forty-two million, one hundred thirty-five thousand, five hundred twenty-two".