31356131305532 has 48 divisors (see below), whose sum is σ = 60198669054720. Its totient is φ = 14172564201600.

The previous prime is 31356131305507. The next prime is 31356131305607. The reversal of 31356131305532 is 23550313165313.

It is a self number, because there is not a number n which added to its sum of digits gives 31356131305532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224687657 + ... + 224827167.

It is an arithmetic number, because the mean of its divisors is an integer number (1254138938640).

Almost surely, 2^{31356131305532} is an apocalyptic number.

It is an amenable number.

31356131305532 is a deficient number, since it is larger than the sum of its proper divisors (28842537749188).

31356131305532 is a wasteful number, since it uses less digits than its factorization.

31356131305532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168242 (or 168240 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 41.

The spelling of 31356131305532 in words is "thirty-one trillion, three hundred fifty-six billion, one hundred thirty-one million, three hundred five thousand, five hundred thirty-two".