1331775087 has 8 divisors (see below), whose sum is σ = 1880153136. Its totient is φ = 835623552.

The previous prime is 1331775083. The next prime is 1331775139. The reversal of 1331775087 is 7805771331.

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

It is not a de Polignac number, because 1331775087 - 2² = 1331775083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331775083) by changing a digit.

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, 13056568 + ... + 13056669.

It is an arithmetic number, because the mean of its divisors is an integer number (235019142).

Almost surely, 2^1331775087 is an apocalyptic number.

1331775087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1331775087 is a deficient number, since it is larger than the sum of its proper divisors (548378049).

1331775087 is a wasteful number, since it uses less digits than its factorization.

1331775087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26113257.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 1331775087 is about 36493.4937625873. The cubic root of 1331775087 is about 1100.2134811558.

The spelling of 1331775087 in words is "one billion, three hundred thirty-one million, seven hundred seventy-five thousand, eighty-seven".