34781161 has 4 divisors (see below), whose sum is σ = 35629524. Its totient is φ = 33932800.

The previous prime is 34781113. The next prime is 34781171. The reversal of 34781161 is 16118743.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7155625 + 27625536 = 2675^2 + 5256^2 .

It is a cyclic number.

It is not a de Polignac number, because 34781161 - 2⁹ = 34780649 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34781171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424120 + ... + 424201.

It is an arithmetic number, because the mean of its divisors is an integer number (8907381).

Almost surely, 2^34781161 is an apocalyptic number.

It is an amenable number.

34781161 is a deficient number, since it is larger than the sum of its proper divisors (848363).

34781161 is an equidigital number, since it uses as much as digits as its factorization.

34781161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848362.

The product of its digits is 4032, while the sum is 31.

The square root of 34781161 is about 5897.5555105484. Note that the first 4 decimals coincide. The cubic root of 34781161 is about 326.4234557636.

The spelling of 34781161 in words is "thirty-four million, seven hundred eighty-one thousand, one hundred sixty-one".