31428328050 has 720 divisors, whose sum is σ = 108374492160. Its totient is φ = 6721263360.

The previous prime is 31428328037. The next prime is 31428328121. The reversal of 31428328050 is 5082382413.

It is a junction number, because it is equal to n+sod(n) for n = 31428327996 and 31428328014.

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 359 ways as a sum of consecutive naturals, for example, 247467087 + ... + 247467213.

It is an arithmetic number, because the mean of its divisors is an integer number (150520128).

Almost surely, 2^31428328050 is an apocalyptic number.

31428328050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31428328050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54187246080).

31428328050 is an abundant number, since it is smaller than the sum of its proper divisors (76946164110).

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

31428328050 is a wasteful number, since it uses less digits than its factorization.

31428328050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 31428328050 in words is "thirty-one billion, four hundred twenty-eight million, three hundred twenty-eight thousand, fifty".