1331004312 has 192 divisors, whose sum is σ = 4143484800. Its totient is φ = 396887040.

The previous prime is 1331004263. The next prime is 1331004331. The reversal of 1331004312 is 2134001331.

1331004312 is a `hidden beast` number, since 133 + 100 + 431 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1432264 + ... + 1433192.

It is an arithmetic number, because the mean of its divisors is an integer number (21580650).

Almost surely, 2^1331004312 is an apocalyptic number.

1331004312 is a gapful number since it is divisible by the number (12) 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 1331004312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2071742400).

1331004312 is an abundant number, since it is smaller than the sum of its proper divisors (2812480488).

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

1331004312 is a wasteful number, since it uses less digits than its factorization.

1331004312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1331004312 is about 36482.9317900851. The cubic root of 1331004312 is about 1100.0011878775.

Adding to 1331004312 its reverse (2134001331), we get a palindrome (3465005643).

The spelling of 1331004312 in words is "one billion, three hundred thirty-one million, four thousand, three hundred twelve".