106311781 has 8 divisors (see below), whose sum is σ = 110410784. Its totient is φ = 102286800.

The previous prime is 106311757. The next prime is 106311817. The reversal of 106311781 is 187113601.

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 106311781 - 2¹¹ = 106309733 is a prime.

It is a super-2 number, since 2×106311781² = 22604389558783922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106311731) 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, 15570 + ... + 21331.

It is an arithmetic number, because the mean of its divisors is an integer number (13801348).

Almost surely, 2^106311781 is an apocalyptic number.

It is an amenable number.

106311781 is a deficient number, since it is larger than the sum of its proper divisors (4099003).

106311781 is an equidigital number, since it uses as much as digits as its factorization.

106311781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37011.

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

The square root of 106311781 is about 10310.7604472221. The cubic root of 106311781 is about 473.7259018706.

The spelling of 106311781 in words is "one hundred six million, three hundred eleven thousand, seven hundred eighty-one".