130236657 has 4 divisors (see below), whose sum is σ = 173648880. Its totient is φ = 86824436.

The previous prime is 130236629. The next prime is 130236661. The reversal of 130236657 is 756632031.

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 130236657 - 2¹¹ = 130234609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130236607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21706107 + ... + 21706112.

It is an arithmetic number, because the mean of its divisors is an integer number (43412220).

Almost surely, 2^130236657 is an apocalyptic number.

It is an amenable number.

130236657 is a deficient number, since it is larger than the sum of its proper divisors (43412223).

130236657 is an equidigital number, since it uses as much as digits as its factorization.

130236657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43412222.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 130236657 is about 11412.1276280981. The cubic root of 130236657 is about 506.8869146226.

Adding to 130236657 its reverse (756632031), we get a palindrome (886868688).

The spelling of 130236657 in words is "one hundred thirty million, two hundred thirty-six thousand, six hundred fifty-seven".