321145131111 has 32 divisors (see below), whose sum is σ = 492045926400. Its totient is φ = 182506257120.

The previous prime is 321145131107. The next prime is 321145131113. The reversal of 321145131111 is 111131541123.

It is a happy number.

It is not a de Polignac number, because 321145131111 - 2² = 321145131107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321145131113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23573860 + ... + 23587478.

It is an arithmetic number, because the mean of its divisors is an integer number (15376435200).

Almost surely, 2^321145131111 is an apocalyptic number.

321145131111 is a deficient number, since it is larger than the sum of its proper divisors (170900795289).

321145131111 is a wasteful number, since it uses less digits than its factorization.

321145131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19699.

The product of its digits is 360, while the sum is 24.

Adding to 321145131111 its reverse (111131541123), we get a palindrome (432276672234).

The spelling of 321145131111 in words is "three hundred twenty-one billion, one hundred forty-five million, one hundred thirty-one thousand, one hundred eleven".