340513087 has 4 divisors (see below), whose sum is σ = 348432040. Its totient is φ = 332594136.

The previous prime is 340513067. The next prime is 340513139. The reversal of 340513087 is 780315043.

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 340513087 - 2¹⁵ = 340480319 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 (340513027) 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, 3959412 + ... + 3959497.

It is an arithmetic number, because the mean of its divisors is an integer number (87108010).

Almost surely, 2^340513087 is an apocalyptic number.

340513087 is a deficient number, since it is larger than the sum of its proper divisors (7918953).

340513087 is an equidigital number, since it uses as much as digits as its factorization.

340513087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7918952.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 340513087 is about 18452.9966943042. The cubic root of 340513087 is about 698.3041171690.

The spelling of 340513087 in words is "three hundred forty million, five hundred thirteen thousand, eighty-seven".