340137309 has 16 divisors (see below), whose sum is σ = 483658560. Its totient is φ = 211879680.

The previous prime is 340137299. The next prime is 340137311. The reversal of 340137309 is 903731043.

It is not a de Polignac number, because 340137309 - 2¹¹ = 340135261 is a prime.

It is a super-2 number, since 2×340137309² = 231386777947522962, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340137509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16902 + ... + 31079.

It is an arithmetic number, because the mean of its divisors is an integer number (30228660).

Almost surely, 2^340137309 is an apocalyptic number.

It is an amenable number.

340137309 is a deficient number, since it is larger than the sum of its proper divisors (143521251).

340137309 is a wasteful number, since it uses less digits than its factorization.

340137309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48140.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 340137309 is about 18442.8118517757. The cubic root of 340137309 is about 698.0471481796.

The spelling of 340137309 in words is "three hundred forty million, one hundred thirty-seven thousand, three hundred nine".