31334936928 has 48 divisors (see below), whose sum is σ = 87092696880. Its totient is φ = 9830567936.

The previous prime is 31334936923. The next prime is 31334936929. The reversal of 31334936928 is 82963943313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31334936921) 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 7 ways as a sum of consecutive naturals, for example, 9598533 + ... + 9601796.

It is an arithmetic number, because the mean of its divisors is an integer number (1814431185).

Almost surely, 2^31334936928 is an apocalyptic number.

It is an amenable number.

31334936928 is an abundant number, since it is smaller than the sum of its proper divisors (55757759952).

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

31334936928 is a wasteful number, since it uses less digits than its factorization.

31334936928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200359 (or 19200351 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 51.

The spelling of 31334936928 in words is "thirty-one billion, three hundred thirty-four million, nine hundred thirty-six thousand, nine hundred twenty-eight".