340782193 has 4 divisors (see below), whose sum is σ = 341871268. Its totient is φ = 339693120.

The previous prime is 340782139. The next prime is 340782203. The reversal of 340782193 is 391287043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 391287043 = 7 ⋅55898149.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 328588129 = 3492^2 + 18127^2 .

It is a cyclic number.

It is not a de Polignac number, because 340782193 - 2⁹ = 340781681 is a prime.

It is a super-2 number, since 2×340782193² = 232265006131778498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340783193) 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, 544068 + ... + 544693.

It is an arithmetic number, because the mean of its divisors is an integer number (85467817).

Almost surely, 2^340782193 is an apocalyptic number.

It is an amenable number.

340782193 is a deficient number, since it is larger than the sum of its proper divisors (1089075).

340782193 is a wasteful number, since it uses less digits than its factorization.

340782193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089074.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 340782193 is about 18460.2869154301. The cubic root of 340782193 is about 698.4880242914.

The spelling of 340782193 in words is "three hundred forty million, seven hundred eighty-two thousand, one hundred ninety-three".