34340781 has 4 divisors (see below), whose sum is σ = 45787712. Its totient is φ = 22893852.

The previous prime is 34340749. The next prime is 34340827. The reversal of 34340781 is 18704343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 34340781 - 2⁵ = 34340749 is a prime.

It is a super-2 number, since 2×34340781² = 2358578479379922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34340741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5723461 + ... + 5723466.

It is an arithmetic number, because the mean of its divisors is an integer number (11446928).

Almost surely, 2^34340781 is an apocalyptic number.

It is an amenable number.

34340781 is a deficient number, since it is larger than the sum of its proper divisors (11446931).

34340781 is a wasteful number, since it uses less digits than its factorization.

34340781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11446930.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 34340781 is about 5860.1007670517. The cubic root of 34340781 is about 325.0399351321.

The spelling of 34340781 in words is "thirty-four million, three hundred forty thousand, seven hundred eighty-one".