130321445 has 4 divisors (see below), whose sum is σ = 156385740. Its totient is φ = 104257152.

The previous prime is 130321417. The next prime is 130321463. The reversal of 130321445 is 544123031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544123031 = 7411 ⋅73421.

It can be written as a sum of positive squares in 2 ways, for example, as 99341089 + 30980356 = 9967^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 130321445 - 2¹² = 130317349 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 130321445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13032140 + ... + 13032149.

It is an arithmetic number, because the mean of its divisors is an integer number (39096435).

Almost surely, 2^130321445 is an apocalyptic number.

It is an amenable number.

130321445 is a deficient number, since it is larger than the sum of its proper divisors (26064295).

130321445 is an equidigital number, since it uses as much as digits as its factorization.

130321445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26064294.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 130321445 is about 11415.8418436837. The cubic root of 130321445 is about 506.9968903274.

Adding to 130321445 its reverse (544123031), we get a palindrome (674444476).

The spelling of 130321445 in words is "one hundred thirty million, three hundred twenty-one thousand, four hundred forty-five".