101530247 has 32 divisors (see below), whose sum is σ = 131174400. Its totient is φ = 76422528.

The previous prime is 101530241. The next prime is 101530249. The reversal of 101530247 is 742035101.

It is not a de Polignac number, because 101530247 - 2¹⁰ = 101529223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101530241) 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 31 ways as a sum of consecutive naturals, for example, 208238 + ... + 208724.

It is an arithmetic number, because the mean of its divisors is an integer number (4099200).

Almost surely, 2^101530247 is an apocalyptic number.

101530247 is a deficient number, since it is larger than the sum of its proper divisors (29644153).

101530247 is a wasteful number, since it uses less digits than its factorization.

101530247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 101530247 is about 10076.2218613923. The cubic root of 101530247 is about 466.5145007855.

Adding to 101530247 its reverse (742035101), we get a palindrome (843565348).

The spelling of 101530247 in words is "one hundred one million, five hundred thirty thousand, two hundred forty-seven".