130133321 has 4 divisors (see below), whose sum is σ = 130344852. Its totient is φ = 129921792.

The previous prime is 130133281. The next prime is 130133327. The reversal of 130133321 is 123331031.

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 1990921 + 128142400 = 1411^2 + 11320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130133321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130133321.

It is not an unprimeable number, because it can be changed into a prime (130133327) 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, 104840 + ... + 106073.

It is an arithmetic number, because the mean of its divisors is an integer number (32586213).

Almost surely, 2^130133321 is an apocalyptic number.

It is an amenable number.

130133321 is a deficient number, since it is larger than the sum of its proper divisors (211531).

130133321 is an equidigital number, since it uses as much as digits as its factorization.

130133321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211530.

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

The square root of 130133321 is about 11407.5992654020. The cubic root of 130133321 is about 506.7528163663.

Adding to 130133321 its reverse (123331031), we get a palindrome (253464352).

The spelling of 130133321 in words is "one hundred thirty million, one hundred thirty-three thousand, three hundred twenty-one".