1331411240 has 32 divisors (see below), whose sum is σ = 3004339680. Its totient is φ = 531024192.

The previous prime is 1331411227. The next prime is 1331411261. The reversal of 1331411240 is 421141331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34082 + ... + 61841.

It is an arithmetic number, because the mean of its divisors is an integer number (93885615).

Almost surely, 2^1331411240 is an apocalyptic number.

1331411240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331411240 is an abundant number, since it is smaller than the sum of its proper divisors (1672928440).

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

1331411240 is a wasteful number, since it uses less digits than its factorization.

1331411240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96281 (or 96277 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1331411240 is about 36488.5083279654. The cubic root of 1331411240 is about 1100.1132775905.

Adding to 1331411240 its reverse (421141331), we get a palindrome (1752552571).

The spelling of 1331411240 in words is "one billion, three hundred thirty-one million, four hundred eleven thousand, two hundred forty".