108213381 has 32 divisors (see below), whose sum is σ = 170553600. Its totient is φ = 67576320.

The previous prime is 108213377. The next prime is 108213389. The reversal of 108213381 is 183312801.

It is not a de Polignac number, because 108213381 - 2² = 108213377 is a prime.

It is a super-2 number, since 2×108213381² = 23420271654902322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108213389) 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, 128560 + ... + 129398.

It is an arithmetic number, because the mean of its divisors is an integer number (5329800).

Almost surely, 2^108213381 is an apocalyptic number.

It is an amenable number.

108213381 is a deficient number, since it is larger than the sum of its proper divisors (62340219).

108213381 is a wasteful number, since it uses less digits than its factorization.

108213381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 108213381 is about 10402.5660776560. The cubic root of 108213381 is about 476.5337400277.

The spelling of 108213381 in words is "one hundred eight million, two hundred thirteen thousand, three hundred eighty-one".