188313013 has 4 divisors (see below), whose sum is σ = 215214880. Its totient is φ = 161411148.

The previous prime is 188312989. The next prime is 188313023. The reversal of 188313013 is 310313881.

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: 310313881 = 47 ⋅6602423.

It is a cyclic number.

It is not a de Polignac number, because 188313013 - 2⁵ = 188312981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188313023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13450923 + ... + 13450936.

It is an arithmetic number, because the mean of its divisors is an integer number (53803720).

Almost surely, 2^188313013 is an apocalyptic number.

It is an amenable number.

188313013 is a deficient number, since it is larger than the sum of its proper divisors (26901867).

188313013 is an equidigital number, since it uses as much as digits as its factorization.

188313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26901866.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 188313013 is about 13722.7188632574. The cubic root of 188313013 is about 573.1831885168.

Adding to 188313013 its reverse (310313881), we get a palindrome (498626894).

The spelling of 188313013 in words is "one hundred eighty-eight million, three hundred thirteen thousand, thirteen".