1281323010 has 64 divisors (see below), whose sum is σ = 3400755840. Its totient is φ = 306362880.

The previous prime is 1281323003. The next prime is 1281323023. The reversal of 1281323010 is 103231821.

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 31 ways as a sum of consecutive naturals, for example, 2505 + ... + 50684.

It is an arithmetic number, because the mean of its divisors is an integer number (53136810).

Almost surely, 2^1281323010 is an apocalyptic number.

1281323010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281323010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700377920).

1281323010 is an abundant number, since it is smaller than the sum of its proper divisors (2119432830).

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

1281323010 is a wasteful number, since it uses less digits than its factorization.

1281323010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53283.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1281323010 is about 35795.5724915806. The cubic root of 1281323010 is about 1086.1410013328.

Adding to 1281323010 its reverse (103231821), we get a palindrome (1384554831).

The spelling of 1281323010 in words is "one billion, two hundred eighty-one million, three hundred twenty-three thousand, ten".