190936831 has 2 divisors, whose sum is σ = 190936832. Its totient is φ = 190936830.

The previous prime is 190936819. The next prime is 190936847. The reversal of 190936831 is 138639091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190936831 - 2⁵ = 190936799 is a prime.

It is a super-2 number, since 2×190936831² = 72913746864645122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190936531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95468415 + 95468416.

It is an arithmetic number, because the mean of its divisors is an integer number (95468416).

Almost surely, 2^190936831 is an apocalyptic number.

190936831 is a deficient number, since it is larger than the sum of its proper divisors (1).

190936831 is an equidigital number, since it uses as much as digits as its factorization.

190936831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 190936831 is about 13817.9893978827. The cubic root of 190936831 is about 575.8330267288.

The spelling of 190936831 in words is "one hundred ninety million, nine hundred thirty-six thousand, eight hundred thirty-one".