3106806781 has 16 divisors (see below), whose sum is σ = 3432574656. Its totient is φ = 2794386816.

The previous prime is 3106806751. The next prime is 3106806809. The reversal of 3106806781 is 1876086013.

It is not a de Polignac number, because 3106806781 - 2¹⁷ = 3106675709 is a prime.

It is a super-2 number, since 2×3106806781² = 19304496748935163922, 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 (3106806751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59046 + ... + 98488.

It is an arithmetic number, because the mean of its divisors is an integer number (214535916).

Almost surely, 2^3106806781 is an apocalyptic number.

It is an amenable number.

3106806781 is a deficient number, since it is larger than the sum of its proper divisors (325767875).

3106806781 is a wasteful number, since it uses less digits than its factorization.

3106806781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39612.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 3106806781 is about 55738.7368084351. The cubic root of 3106806781 is about 1459.1661562811.

The spelling of 3106806781 in words is "three billion, one hundred six million, eight hundred six thousand, seven hundred eighty-one".