190231501 has 2 divisors, whose sum is σ = 190231502. Its totient is φ = 190231500.

The previous prime is 190231451. The next prime is 190231529. The reversal of 190231501 is 105132091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184253476 + 5978025 = 13574^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 190231501 - 2⁷ = 190231373 is a prime.

It is a super-3 number, since 3×190231501³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190235501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95115750 + 95115751.

It is an arithmetic number, because the mean of its divisors is an integer number (95115751).

Almost surely, 2^190231501 is an apocalyptic number.

It is an amenable number.

190231501 is a deficient number, since it is larger than the sum of its proper divisors (1).

190231501 is an equidigital number, since it uses as much as digits as its factorization.

190231501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 190231501 is about 13792.4436196056. The cubic root of 190231501 is about 575.1231000460.

Adding to 190231501 its reverse (105132091), we get a palindrome (295363592).

The spelling of 190231501 in words is "one hundred ninety million, two hundred thirty-one thousand, five hundred one".