340388087 has 4 divisors (see below), whose sum is σ = 366571800. Its totient is φ = 314204376.

The previous prime is 340388077. The next prime is 340388131. The reversal of 340388087 is 780883043.

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

It is a cyclic number.

It is not a de Polignac number, because 340388087 - 2⁴ = 340388071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340388077) 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, 13091837 + ... + 13091862.

It is an arithmetic number, because the mean of its divisors is an integer number (91642950).

Almost surely, 2^340388087 is an apocalyptic number.

340388087 is a deficient number, since it is larger than the sum of its proper divisors (26183713).

340388087 is a wasteful number, since it uses less digits than its factorization.

340388087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26183712.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 340388087 is about 18449.6093996594. The cubic root of 340388087 is about 698.2186591733.

The spelling of 340388087 in words is "three hundred forty million, three hundred eighty-eight thousand, eighty-seven".