190011131 has 2 divisors, whose sum is σ = 190011132. Its totient is φ = 190011130.

The previous prime is 190011127. The next prime is 190011139. The reversal of 190011131 is 131110091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190011131 - 2² = 190011127 is a prime.

It is a super-2 number, since 2×190011131² = 72208459807798322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190011139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95005565 + 95005566.

It is an arithmetic number, because the mean of its divisors is an integer number (95005566).

Almost surely, 2^190011131 is an apocalyptic number.

190011131 is a deficient number, since it is larger than the sum of its proper divisors (1).

190011131 is an equidigital number, since it uses as much as digits as its factorization.

190011131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 17.

The square root of 190011131 is about 13784.4525099838. The cubic root of 190011131 is about 574.9009341618.

It can be divided in two parts, 1900 and 11131, that added together give a palindrome (13031).

The spelling of 190011131 in words is "one hundred ninety million, eleven thousand, one hundred thirty-one".