321130133 has 4 divisors (see below), whose sum is σ = 321701088. Its totient is φ = 320559180.

The previous prime is 321130093. The next prime is 321130189. The reversal of 321130133 is 331031123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321130133 - 2⁸ = 321129877 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 (321133133) 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, 284633 + ... + 285758.

It is an arithmetic number, because the mean of its divisors is an integer number (80425272).

Almost surely, 2^321130133 is an apocalyptic number.

It is an amenable number.

321130133 is a deficient number, since it is larger than the sum of its proper divisors (570955).

321130133 is an equidigital number, since it uses as much as digits as its factorization.

321130133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570954.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 321130133 is about 17920.1041570634. The cubic root of 321130133 is about 684.7946410532.

Adding to 321130133 its reverse (331031123), we get a palindrome (652161256).

The spelling of 321130133 in words is "three hundred twenty-one million, one hundred thirty thousand, one hundred thirty-three".