190131089 has 2 divisors, whose sum is σ = 190131090. Its totient is φ = 190131088.

The previous prime is 190131037. The next prime is 190131101. The reversal of 190131089 is 980131091.

190131089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189971089 + 160000 = 13783^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 190131089 - 2⁸ = 190130833 is a prime.

It is a super-2 number, since 2×190131089² = 72299662008651842, which contains 22 as substring.

It is a Chen prime.

It is equal to p_10562378 and since 190131089 and 10562378 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (190121089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95065544 + 95065545.

It is an arithmetic number, because the mean of its divisors is an integer number (95065545).

Almost surely, 2^190131089 is an apocalyptic number.

It is an amenable number.

190131089 is a deficient number, since it is larger than the sum of its proper divisors (1).

190131089 is an equidigital number, since it uses as much as digits as its factorization.

190131089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 190131089 is about 13788.8030299950. The cubic root of 190131089 is about 575.0218910380.

It can be divided in two parts, 19013 and 1089, that added together give a palindrome (20102).

The spelling of 190131089 in words is "one hundred ninety million, one hundred thirty-one thousand, eighty-nine".