188131707 has 32 divisors (see below), whose sum is σ = 300153600. Its totient is φ = 116025984.

The previous prime is 188131661. The next prime is 188131733. The reversal of 188131707 is 707131881.

It is not a de Polignac number, because 188131707 - 2⁸ = 188131451 is a prime.

It is a super-3 number, since 3×188131707³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (188131507) 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 31 ways as a sum of consecutive naturals, for example, 23608 + ... + 30554.

It is an arithmetic number, because the mean of its divisors is an integer number (9379800).

Almost surely, 2^188131707 is an apocalyptic number.

188131707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

188131707 is a deficient number, since it is larger than the sum of its proper divisors (112021893).

188131707 is a wasteful number, since it uses less digits than its factorization.

188131707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032 (or 7026 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The square root of 188131707 is about 13716.1112200215. Note that the first 3 decimals coincide. The cubic root of 188131707 is about 572.9991776529. Note that the first 3 decimals are identical.

The spelling of 188131707 in words is "one hundred eighty-eight million, one hundred thirty-one thousand, seven hundred seven".