106181731 has 8 divisors (see below), whose sum is σ = 114619680. Its totient is φ = 98062272.

The previous prime is 106181701. The next prime is 106181743. The reversal of 106181731 is 137181601.

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

It is a cyclic number.

It is not a de Polignac number, because 106181731 - 2⁹ = 106181219 is a prime.

It is a super-2 number, since 2×106181731² = 22549119996312722, which contains 22 as substring.

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 106181731.

It is not an unprimeable number, because it can be changed into a prime (106181701) 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, 78930 + ... + 80263.

It is an arithmetic number, because the mean of its divisors is an integer number (14327460).

Almost surely, 2^106181731 is an apocalyptic number.

106181731 is a deficient number, since it is larger than the sum of its proper divisors (8437949).

106181731 is a wasteful number, since it uses less digits than its factorization.

106181731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159245.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 106181731 is about 10304.4519990148. The cubic root of 106181731 is about 473.5326552034.

The spelling of 106181731 in words is "one hundred six million, one hundred eighty-one thousand, seven hundred thirty-one".