101881690 has 16 divisors (see below), whose sum is σ = 184488192. Its totient is φ = 40507984.

The previous prime is 101881673. The next prime is 101881693. The reversal of 101881690 is 96188101.

It is a super-2 number, since 2×101881690² = 20759757514512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101881693) 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 7 ways as a sum of consecutive naturals, for example, 28834 + ... + 32173.

It is an arithmetic number, because the mean of its divisors is an integer number (11530512).

Almost surely, 2^101881690 is an apocalyptic number.

101881690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101881690 is a deficient number, since it is larger than the sum of its proper divisors (82606502).

101881690 is a wasteful number, since it uses less digits than its factorization.

101881690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61181.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 101881690 is about 10093.6460211363. The cubic root of 101881690 is about 467.0521548373.

The spelling of 101881690 in words is "one hundred one million, eight hundred eighty-one thousand, six hundred ninety".