190131107 has 2 divisors, whose sum is σ = 190131108. Its totient is φ = 190131106.

The previous prime is 190131103. The next prime is 190131127. The reversal of 190131107 is 701131091.

It is a weak prime.

It is an emirp because it is prime and its reverse (701131091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190131107 - 2² = 190131103 is a prime.

It is a super-2 number, since 2×190131107² = 72299675698090898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190131101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95065553 + 95065554.

It is an arithmetic number, because the mean of its divisors is an integer number (95065554).

Almost surely, 2^190131107 is an apocalyptic number.

190131107 is a deficient number, since it is larger than the sum of its proper divisors (1).

190131107 is an equidigital number, since it uses as much as digits as its factorization.

190131107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 190131107 is about 13788.8036826985. The cubic root of 190131107 is about 575.0219091841.

Adding to 190131107 its reverse (701131091), we get a palindrome (891262198).

The spelling of 190131107 in words is "one hundred ninety million, one hundred thirty-one thousand, one hundred seven".