101530190 has 16 divisors (see below), whose sum is σ = 184530528. Its totient is φ = 40217376.

The previous prime is 101530147. The next prime is 101530193. The reversal of 101530190 is 91035101.

It is a super-2 number, since 2×101530190² = 20616758962872200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101530193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48257 + ... + 50316.

It is an arithmetic number, because the mean of its divisors is an integer number (11533158).

Almost surely, 2^101530190 is an apocalyptic number.

101530190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101530190 is a deficient number, since it is larger than the sum of its proper divisors (83000338).

101530190 is a wasteful number, since it uses less digits than its factorization.

101530190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98683.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 101530190 is about 10076.2190329508. The cubic root of 101530190 is about 466.5144134837.

Adding to 101530190 its reverse (91035101), we get a palindrome (192565291).

The spelling of 101530190 in words is "one hundred one million, five hundred thirty thousand, one hundred ninety".