190131101 has 2 divisors, whose sum is σ = 190131102. Its totient is φ = 190131100.

The previous prime is 190131089. The next prime is 190131103. The reversal of 190131101 is 101131091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170328601 + 19802500 = 13051^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 190131101 - 2⁶ = 190131037 is a prime.

It is a super-2 number, since 2×190131101² = 72299671134944402, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 190131103, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 190131101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190131103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95065550 + 95065551.

It is an arithmetic number, because the mean of its divisors is an integer number (95065551).

Almost surely, 2^190131101 is an apocalyptic number.

It is an amenable number.

190131101 is a deficient number, since it is larger than the sum of its proper divisors (1).

190131101 is an equidigital number, since it uses as much as digits as its factorization.

190131101 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 190131101 is about 13788.8034651307. The cubic root of 190131101 is about 575.0219031354.

Adding to 190131101 its reverse (101131091), we get a palindrome (291262192).

The spelling of 190131101 in words is "one hundred ninety million, one hundred thirty-one thousand, one hundred one".