1331540255 has 8 divisors (see below), whose sum is σ = 1598097600. Its totient is φ = 1065066016.

The previous prime is 1331540251. The next prime is 1331540257. The reversal of 1331540255 is 5520451331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331540255 - 2² = 1331540251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331540251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22781 + ... + 56409.

It is an arithmetic number, because the mean of its divisors is an integer number (199762200).

Almost surely, 2^1331540255 is an apocalyptic number.

1331540255 is a deficient number, since it is larger than the sum of its proper divisors (266557345).

1331540255 is an equidigital number, since it uses as much as digits as its factorization.

1331540255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41553.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1331540255 is about 36490.2761705088. The cubic root of 1331540255 is about 1100.1488104462.

Adding to 1331540255 its reverse (5520451331), we get a palindrome (6851991586).

The spelling of 1331540255 in words is "one billion, three hundred thirty-one million, five hundred forty thousand, two hundred fifty-five".