101187481 has 4 divisors (see below), whose sum is σ = 101365264. Its totient is φ = 101009700.

The previous prime is 101187469. The next prime is 101187491. The reversal of 101187481 is 184781101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184781101 = 5023 ⋅36787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101187481 is a prime.

It is a super-3 number, since 3×101187481³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101187461) 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, 88035 + ... + 89176.

It is an arithmetic number, because the mean of its divisors is an integer number (25341316).

Almost surely, 2^101187481 is an apocalyptic number.

It is an amenable number.

101187481 is a deficient number, since it is larger than the sum of its proper divisors (177783).

101187481 is an equidigital number, since it uses as much as digits as its factorization.

101187481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177782.

The product of its (nonzero) digits is 1792, while the sum is 31.

The square root of 101187481 is about 10059.1988249562. The cubic root of 101187481 is about 465.9889247492.

The spelling of 101187481 in words is "one hundred one million, one hundred eighty-seven thousand, four hundred eighty-one".