281130850000 has 960 divisors, whose sum is σ = 943238628864. Its totient is φ = 78336000000.

The previous prime is 281130849971. The next prime is 281130850003. The reversal of 281130850000 is 58031182.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281130850003) 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 191 ways as a sum of consecutive naturals, for example, 2052049932 + ... + 2052050068.

Almost surely, 2^281130850000 is an apocalyptic number.

281130850000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281130850000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471619314432).

281130850000 is an abundant number, since it is smaller than the sum of its proper divisors (662107778864).

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

281130850000 is a wasteful number, since it uses less digits than its factorization.

281130850000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 281130850000 its reverse (58031182), we get a palindrome (281188881182).

The spelling of 281130850000 in words is "two hundred eighty-one billion, one hundred thirty million, eight hundred fifty thousand".