101530681 has 16 divisors (see below), whose sum is σ = 124951680. Its totient is φ = 80513280.

The previous prime is 101530679. The next prime is 101530687. The reversal of 101530681 is 186035101.

It is a cyclic number.

It is not a de Polignac number, because 101530681 - 2¹ = 101530679 is a prime.

It is a super-2 number, since 2×101530681² = 20616958368647522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101530687) 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 15 ways as a sum of consecutive naturals, for example, 210 + ... + 14251.

It is an arithmetic number, because the mean of its divisors is an integer number (7809480).

Almost surely, 2^101530681 is an apocalyptic number.

It is an amenable number.

101530681 is a deficient number, since it is larger than the sum of its proper divisors (23420999).

101530681 is a wasteful number, since it uses less digits than its factorization.

101530681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14544.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 101530681 is about 10076.2433972190. The cubic root of 101530681 is about 466.5151655037.

Adding to 101530681 its reverse (186035101), we get a palindrome (287565782).

The spelling of 101530681 in words is "one hundred one million, five hundred thirty thousand, six hundred eighty-one".