190131085 has 4 divisors (see below), whose sum is σ = 228157308. Its totient is φ = 152104864.

The previous prime is 190131037. The next prime is 190131089. The reversal of 190131085 is 580131091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580131091 = 67 ⋅8658673.

It can be written as a sum of positive squares in 2 ways, for example, as 120692196 + 69438889 = 10986^2 + 8333^2 .

It is a cyclic number.

It is not a de Polignac number, because 190131085 - 2⁷ = 190130957 is a prime.

It is a super-2 number, since 2×190131085² = 72299658966554450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190131089) 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, 19013104 + ... + 19013113.

It is an arithmetic number, because the mean of its divisors is an integer number (57039327).

Almost surely, 2^190131085 is an apocalyptic number.

It is an amenable number.

190131085 is a deficient number, since it is larger than the sum of its proper divisors (38026223).

190131085 is an equidigital number, since it uses as much as digits as its factorization.

190131085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38026222.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 190131085 is about 13788.8028849498. The cubic root of 190131085 is about 575.0218870056.

The spelling of 190131085 in words is "one hundred ninety million, one hundred thirty-one thousand, eighty-five".