1331300240 has 40 divisors (see below), whose sum is σ = 3117891960. Its totient is φ = 528628736.

The previous prime is 1331300123. The next prime is 1331300261. The reversal of 1331300240 is 420031331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 319551376 + 1011748864 = 17876^2 + 31808^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49775 + ... + 71694.

It is an arithmetic number, because the mean of its divisors is an integer number (77947299).

Almost surely, 2^1331300240 is an apocalyptic number.

1331300240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331300240 is an abundant number, since it is smaller than the sum of its proper divisors (1786591720).

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

1331300240 is a wasteful number, since it uses less digits than its factorization.

1331300240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121619 (or 121613 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1331300240 is about 36486.9872694362. The cubic root of 1331300240 is about 1100.0827045254.

Adding to 1331300240 its reverse (420031331), we get a palindrome (1751331571).

The spelling of 1331300240 in words is "one billion, three hundred thirty-one million, three hundred thousand, two hundred forty".