1691233310011 has 8 divisors (see below), whose sum is σ = 1933177864160. Its totient is φ = 1449373704768.

The previous prime is 1691233309877. The next prime is 1691233310021. The reversal of 1691233310011 is 1100133321961.

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 1691233310011 - 2⁹ = 1691233309499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1691233310021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21194556 + ... + 21274201.

It is an arithmetic number, because the mean of its divisors is an integer number (241647233020).

Almost surely, 2^{1691233310011} is an apocalyptic number.

1691233310011 is a deficient number, since it is larger than the sum of its proper divisors (241944554149).

1691233310011 is an equidigital number, since it uses as much as digits as its factorization.

1691233310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42474453.

The product of its (nonzero) digits is 2916, while the sum is 31.

Adding to 1691233310011 its reverse (1100133321961), we get a palindrome (2791366631972).

The spelling of 1691233310011 in words is "one trillion, six hundred ninety-one billion, two hundred thirty-three million, three hundred ten thousand, eleven".