340401185 has 4 divisors (see below), whose sum is σ = 408481428. Its totient is φ = 272320944.

The previous prime is 340401181. The next prime is 340401197. The reversal of 340401185 is 581104043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581104043 = 13 ⋅44700311.

It can be written as a sum of positive squares in 2 ways, for example, as 204375616 + 136025569 = 14296^2 + 11663^2 .

It is a cyclic number.

It is not a de Polignac number, because 340401185 - 2² = 340401181 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340401181) 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, 34040114 + ... + 34040123.

It is an arithmetic number, because the mean of its divisors is an integer number (102120357).

Almost surely, 2^340401185 is an apocalyptic number.

It is an amenable number.

340401185 is a deficient number, since it is larger than the sum of its proper divisors (68080243).

340401185 is an equidigital number, since it uses as much as digits as its factorization.

340401185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68080242.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 340401185 is about 18449.9643631092. The cubic root of 340401185 is about 698.2276147851.

The spelling of 340401185 in words is "three hundred forty million, four hundred one thousand, one hundred eighty-five".