321140155133 has 24 divisors (see below), whose sum is σ = 385675709184. Its totient is φ = 266346360000.

The previous prime is 321140155129. The next prime is 321140155157. The reversal of 321140155133 is 331551041123.

It is not a de Polignac number, because 321140155133 - 2² = 321140155129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321140155096 and 321140155105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321140155033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18600641 + ... + 18617897.

It is an arithmetic number, because the mean of its divisors is an integer number (16069821216).

Almost surely, 2^321140155133 is an apocalyptic number.

It is an amenable number.

321140155133 is a deficient number, since it is larger than the sum of its proper divisors (64535554051).

321140155133 is a wasteful number, since it uses less digits than its factorization.

321140155133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29553 (or 29546 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 321140155133 its reverse (331551041123), we get a palindrome (652691196256).

The spelling of 321140155133 in words is "three hundred twenty-one billion, one hundred forty million, one hundred fifty-five thousand, one hundred thirty-three".