190660231 has 4 divisors (see below), whose sum is σ = 200695000. Its totient is φ = 180625464.

The previous prime is 190660207. The next prime is 190660241. The reversal of 190660231 is 132066091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132066091 = 967 ⋅136573.

It is a cyclic number.

It is not a de Polignac number, because 190660231 - 2⁷ = 190660103 is a prime.

It is a super-2 number, since 2×190660231² = 72702647369946722, which contains 22 as substring.

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 190660231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190660241) 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, 5017356 + ... + 5017393.

It is an arithmetic number, because the mean of its divisors is an integer number (50173750).

Almost surely, 2^190660231 is an apocalyptic number.

190660231 is a deficient number, since it is larger than the sum of its proper divisors (10034769).

190660231 is a wasteful number, since it uses less digits than its factorization.

190660231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10034768.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 190660231 is about 13807.9770784862. The cubic root of 190660231 is about 575.5548328228.

The spelling of 190660231 in words is "one hundred ninety million, six hundred sixty thousand, two hundred thirty-one".