130023409 has 4 divisors (see below), whose sum is σ = 130567680. Its totient is φ = 129479140.

The previous prime is 130023407. The next prime is 130023431. The reversal of 130023409 is 904320031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 904320031 = 79 ⋅11447089.

It is a cyclic number.

It is not a de Polignac number, because 130023409 - 2¹ = 130023407 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 130023409.

It is not an unprimeable number, because it can be changed into a prime (130023407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271777 + ... + 272254.

It is an arithmetic number, because the mean of its divisors is an integer number (32641920).

Almost surely, 2^130023409 is an apocalyptic number.

It is an amenable number.

130023409 is a deficient number, since it is larger than the sum of its proper divisors (544271).

130023409 is an equidigital number, since it uses as much as digits as its factorization.

130023409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544270.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 130023409 is about 11402.7807573416. The cubic root of 130023409 is about 506.6101065576.

The spelling of 130023409 in words is "one hundred thirty million, twenty-three thousand, four hundred nine".