106187731021 has 8 divisors (see below), whose sum is σ = 106495553664. Its totient is φ = 105880111920.

The previous prime is 106187730977. The next prime is 106187731061. The reversal of 106187731021 is 120137781601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106187731021 is a prime.

It is a super-3 number, since 3×106187731021³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106187731061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026936 + ... + 1125598.

It is an arithmetic number, because the mean of its divisors is an integer number (13311944208).

Almost surely, 2^106187731021 is an apocalyptic number.

It is an amenable number.

106187731021 is a deficient number, since it is larger than the sum of its proper divisors (307822643).

106187731021 is an equidigital number, since it uses as much as digits as its factorization.

106187731021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101771.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 106187731021 in words is "one hundred six billion, one hundred eighty-seven million, seven hundred thirty-one thousand, twenty-one".