321230310133 has 4 divisors (see below), whose sum is σ = 329065195788. Its totient is φ = 313395424480.

The previous prime is 321230310131. The next prime is 321230310187. The reversal of 321230310133 is 331013032123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6490235844 + 314740074289 = 80562^2 + 561017^2 .

It is a cyclic number.

It is not a de Polignac number, because 321230310133 - 2¹ = 321230310131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230310131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917442766 + ... + 3917442847.

It is an arithmetic number, because the mean of its divisors is an integer number (82266298947).

Almost surely, 2^321230310133 is an apocalyptic number.

It is an amenable number.

321230310133 is a deficient number, since it is larger than the sum of its proper divisors (7834885655).

321230310133 is an equidigital number, since it uses as much as digits as its factorization.

321230310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834885654.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 321230310133 its reverse (331013032123), we get a palindrome (652243342256).

The spelling of 321230310133 in words is "three hundred twenty-one billion, two hundred thirty million, three hundred ten thousand, one hundred thirty-three".