101881487 has 4 divisors (see below), whose sum is σ = 101925096. Its totient is φ = 101837880.

The previous prime is 101881399. The next prime is 101881489. The reversal of 101881487 is 784188101.

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 101881487 - 2⁸ = 101881231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101881487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101881489) 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 3 ways as a sum of consecutive naturals, for example, 18089 + ... + 23042.

It is an arithmetic number, because the mean of its divisors is an integer number (25481274).

Almost surely, 2^101881487 is an apocalyptic number.

101881487 is a deficient number, since it is larger than the sum of its proper divisors (43609).

101881487 is an equidigital number, since it uses as much as digits as its factorization.

101881487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43608.

The product of its (nonzero) digits is 14336, while the sum is 38.

The square root of 101881487 is about 10093.6359653001. The cubic root of 101881487 is about 467.0518446355.

The spelling of 101881487 in words is "one hundred one million, eight hundred eighty-one thousand, four hundred eighty-seven".