192311891321 has 16 divisors (see below), whose sum is σ = 211636680768. Its totient is φ = 173297836800.

The previous prime is 192311891309. The next prime is 192311891327. The reversal of 192311891321 is 123198113291.

It is not a de Polignac number, because 192311891321 - 2³⁴ = 175132022137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192311891327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935861 + ... + 1122701.

It is an arithmetic number, because the mean of its divisors is an integer number (13227292548).

Almost surely, 2^192311891321 is an apocalyptic number.

192311891321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

192311891321 is a deficient number, since it is larger than the sum of its proper divisors (19324789447).

192311891321 is a wasteful number, since it uses less digits than its factorization.

192311891321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187672.

The product of its digits is 23328, while the sum is 41.

The spelling of 192311891321 in words is "one hundred ninety-two billion, three hundred eleven million, eight hundred ninety-one thousand, three hundred twenty-one".