101530111 has 4 divisors (see below), whose sum is σ = 101575000. Its totient is φ = 101485224.

The previous prime is 101530021. The next prime is 101530133. The reversal of 101530111 is 111035101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101530111 - 2⁹ = 101529599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101530091 and 101530100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101530141) 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 in 3 ways as a sum of consecutive naturals, for example, 18861 + ... + 23638.

It is an arithmetic number, because the mean of its divisors is an integer number (25393750).

Almost surely, 2^101530111 is an apocalyptic number.

101530111 is a deficient number, since it is larger than the sum of its proper divisors (44889).

101530111 is an equidigital number, since it uses as much as digits as its factorization.

101530111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44888.

The product of its (nonzero) digits is 15, while the sum is 13.

The square root of 101530111 is about 10076.2151128288. The cubic root of 101530111 is about 466.5142924864.

Adding to 101530111 its reverse (111035101), we get a palindrome (212565212).

The spelling of 101530111 in words is "one hundred one million, five hundred thirty thousand, one hundred eleven".