340304553 has 12 divisors (see below), whose sum is σ = 493719408. Its totient is φ = 225868920.

The previous prime is 340304539. The next prime is 340304567. The reversal of 340304553 is 355403043.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (340304539) and next prime (340304567).

It is not a de Polignac number, because 340304553 - 2²² = 336110249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340304513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81243 + ... + 85328.

It is an arithmetic number, because the mean of its divisors is an integer number (41143284).

Almost surely, 2^340304553 is an apocalyptic number.

It is an amenable number.

340304553 is a deficient number, since it is larger than the sum of its proper divisors (153414855).

340304553 is a wasteful number, since it uses less digits than its factorization.

340304553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166804 (or 166801 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 340304553 is about 18447.3454187859. The cubic root of 340304553 is about 698.1615383246.

Adding to 340304553 its reverse (355403043), we get a palindrome (695707596).

It can be divided in two parts, 34030 and 4553, that added together give a palindrome (38583).

The spelling of 340304553 in words is "three hundred forty million, three hundred four thousand, five hundred fifty-three".