1012311200 has 72 divisors (see below), whose sum is σ = 2551086720. Its totient is φ = 391852800.

The previous prime is 1012311199. The next prime is 1012311227. The reversal of 1012311200 is 21132101.

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 11 ways as a sum of consecutive naturals, for example, 4391 + ... + 45209.

It is an arithmetic number, because the mean of its divisors is an integer number (35431760).

Almost surely, 2^1012311200 is an apocalyptic number.

1012311200 is a gapful number since it is divisible by the number (10) 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 1012311200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275543360).

1012311200 is an abundant number, since it is smaller than the sum of its proper divisors (1538775520).

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

1012311200 is a wasteful number, since it uses less digits than its factorization.

1012311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40870 (or 40857 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1012311200 is about 31816.8383092978. The cubic root of 1012311200 is about 1004.0870069516.

Adding to 1012311200 its reverse (21132101), we get a palindrome (1033443301).

The spelling of 1012311200 in words is "one billion, twelve million, three hundred eleven thousand, two hundred".