1331040432345 has 64 divisors (see below), whose sum is σ = 2321905388544. Its totient is φ = 647166723840.

The previous prime is 1331040432329. The next prime is 1331040432461. The reversal of 1331040432345 is 5432340401331.

It is not a de Polignac number, because 1331040432345 - 2⁴ = 1331040432329 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 54158910 + ... + 54183480.

It is an arithmetic number, because the mean of its divisors is an integer number (36279771696).

Almost surely, 2^{1331040432345} is an apocalyptic number.

1331040432345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331040432345 is a deficient number, since it is larger than the sum of its proper divisors (990864956199).

1331040432345 is a wasteful number, since it uses less digits than its factorization.

1331040432345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28022.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 1331040432345 its reverse (5432340401331), we get a palindrome (6763380833676).

The spelling of 1331040432345 in words is "one trillion, three hundred thirty-one billion, forty million, four hundred thirty-two thousand, three hundred forty-five".