340781881 has 16 divisors (see below), whose sum is σ = 394383168. Its totient is φ = 291020800.

The previous prime is 340781879. The next prime is 340781893. The reversal of 340781881 is 188187043.

It is a cyclic number.

It is not a de Polignac number, because 340781881 - 2¹ = 340781879 is a prime.

It is a super-2 number, since 2×340781881² = 232264580835796322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340781681) 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 15 ways as a sum of consecutive naturals, for example, 118446 + ... + 121288.

It is an arithmetic number, because the mean of its divisors is an integer number (24648948).

Almost surely, 2^340781881 is an apocalyptic number.

It is an amenable number.

340781881 is a deficient number, since it is larger than the sum of its proper divisors (53601287).

340781881 is a wasteful number, since it uses less digits than its factorization.

340781881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 340781881 is about 18460.2784648553. The cubic root of 340781881 is about 698.4878111266.

The spelling of 340781881 in words is "three hundred forty million, seven hundred eighty-one thousand, eight hundred eighty-one".