340500331 has 4 divisors (see below), whose sum is σ = 340776832. Its totient is φ = 340223832.

The previous prime is 340500323. The next prime is 340500337. The reversal of 340500331 is 133005043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133005043 = 433 ⋅307171.

It is a cyclic number.

It is not a de Polignac number, because 340500331 - 2³ = 340500323 is a prime.

It is a super-3 number, since 3×340500331³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340500299 and 340500308.

It is not an unprimeable number, because it can be changed into a prime (340500337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136395 + ... + 138868.

It is an arithmetic number, because the mean of its divisors is an integer number (85194208).

Almost surely, 2^340500331 is an apocalyptic number.

340500331 is a deficient number, since it is larger than the sum of its proper divisors (276501).

340500331 is a wasteful number, since it uses less digits than its factorization.

340500331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276500.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 340500331 is about 18452.6510561491. The cubic root of 340500331 is about 698.2953973097.

Adding to 340500331 its reverse (133005043), we get a palindrome (473505374).

The spelling of 340500331 in words is "three hundred forty million, five hundred thousand, three hundred thirty-one".