1331341505 has 32 divisors (see below), whose sum is σ = 1764854784. Its totient is φ = 957989376.

The previous prime is 1331341489. The next prime is 1331341513. The reversal of 1331341505 is 5051431331.

It is a cyclic number.

It is not a de Polignac number, because 1331341505 - 2⁴ = 1331341489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802637 + ... + 804293.

It is an arithmetic number, because the mean of its divisors is an integer number (55151712).

Almost surely, 2^1331341505 is an apocalyptic number.

It is an amenable number.

1331341505 is a deficient number, since it is larger than the sum of its proper divisors (433513279).

1331341505 is a wasteful number, since it uses less digits than its factorization.

1331341505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1331341505 is about 36487.5527406265. The cubic root of 1331341505 is about 1100.0940704674.

Adding to 1331341505 its reverse (5051431331), we get a palindrome (6382772836).

The spelling of 1331341505 in words is "one billion, three hundred thirty-one million, three hundred forty-one thousand, five hundred five".