190840831 has 4 divisors (see below), whose sum is σ = 192985200. Its totient is φ = 188696464.

The previous prime is 190840817. The next prime is 190840847. The reversal of 190840831 is 138048091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190840831 - 2⁹ = 190840319 is a prime.

It is a super-2 number, since 2×190840831² = 72840445553541122, 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 (190840231) 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, 1072051 + ... + 1072228.

It is an arithmetic number, because the mean of its divisors is an integer number (48246300).

Almost surely, 2^190840831 is an apocalyptic number.

190840831 is a deficient number, since it is larger than the sum of its proper divisors (2144369).

190840831 is an equidigital number, since it uses as much as digits as its factorization.

190840831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144368.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 190840831 is about 13814.5152285558. The cubic root of 190840831 is about 575.7365039896.

The spelling of 190840831 in words is "one hundred ninety million, eight hundred forty thousand, eight hundred thirty-one".