31428444750 has 32 divisors (see below), whose sum is σ = 78445399968. Its totient is φ = 8380918400.

The previous prime is 31428444703. The next prime is 31428444779. The reversal of 31428444750 is 5744482413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20951547 + ... + 20953046.

It is an arithmetic number, because the mean of its divisors is an integer number (2451418749).

Almost surely, 2^31428444750 is an apocalyptic number.

31428444750 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31428444750 is an abundant number, since it is smaller than the sum of its proper divisors (47016955218).

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

31428444750 is a wasteful number, since it uses less digits than its factorization.

31428444750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41904613 (or 41904603 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 31428444750 in words is "thirty-one billion, four hundred twenty-eight million, four hundred forty-four thousand, seven hundred fifty".