203281056 has 192 divisors, whose sum is σ = 657901440. Its totient is φ = 60549120.

The previous prime is 203281031. The next prime is 203281079. The reversal of 203281056 is 650182302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693646 + ... + 693938.

It is an arithmetic number, because the mean of its divisors is an integer number (3426570).

Almost surely, 2^203281056 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 203281056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328950720).

203281056 is an abundant number, since it is smaller than the sum of its proper divisors (454620384).

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

203281056 is a wasteful number, since it uses less digits than its factorization.

203281056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 203281056 is about 14257.6665692532. Note that the first 3 decimals coincide. The cubic root of 203281056 is about 587.9841728351.

The spelling of 203281056 in words is "two hundred three million, two hundred eighty-one thousand, fifty-six".