31706655552 has 672 divisors, whose sum is σ = 113232712320. Its totient is φ = 8669306880.

The previous prime is 31706655529. The next prime is 31706655581. The reversal of 31706655552 is 25555660713.

31706655552 is a `hidden beast` number, since 31 + 7 + 0 + 6 + 65 + 5 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31706655498 and 31706655507.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 117868474 + ... + 117868742.

It is an arithmetic number, because the mean of its divisors is an integer number (168501060).

Almost surely, 2^31706655552 is an apocalyptic number.

31706655552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31706655552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56616356160).

31706655552 is an abundant number, since it is smaller than the sum of its proper divisors (81526056768).

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

31706655552 is a wasteful number, since it uses less digits than its factorization.

31706655552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The spelling of 31706655552 in words is "thirty-one billion, seven hundred six million, six hundred fifty-five thousand, five hundred fifty-two".