130505233 has 4 divisors (see below), whose sum is σ = 131051520. Its totient is φ = 129958948.

The previous prime is 130505201. The next prime is 130505267. The reversal of 130505233 is 332505031.

It is a happy number.

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 130505233 - 2⁵ = 130505201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130505273) 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, 272785 + ... + 273262.

It is an arithmetic number, because the mean of its divisors is an integer number (32762880).

Almost surely, 2^130505233 is an apocalyptic number.

It is an amenable number.

130505233 is a deficient number, since it is larger than the sum of its proper divisors (546287).

130505233 is an equidigital number, since it uses as much as digits as its factorization.

130505233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546286.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 130505233 is about 11423.8886986875. Note that the first 3 decimals coincide. The cubic root of 130505233 is about 507.2351119951.

The spelling of 130505233 in words is "one hundred thirty million, five hundred five thousand, two hundred thirty-three".