31068536928 has 288 divisors, whose sum is σ = 97013000448. Its totient is φ = 8647879680.

The previous prime is 31068536921. The next prime is 31068536963. The reversal of 31068536928 is 82963586013.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31068536921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42734901 + ... + 42735627.

It is an arithmetic number, because the mean of its divisors is an integer number (336850696).

Almost surely, 2^31068536928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31068536928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48506500224).

31068536928 is an abundant number, since it is smaller than the sum of its proper divisors (65944463520).

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

31068536928 is a wasteful number, since it uses less digits than its factorization.

31068536928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 31068536928 in words is "thirty-one billion, sixty-eight million, five hundred thirty-six thousand, nine hundred twenty-eight".