343551 has 16 divisors (see below), whose sum is σ = 516096. Its totient is φ = 201696.

The previous prime is 343547. The next prime is 343559. The reversal of 343551 is 155343.

343551 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 343551 - 2² = 343547 is a prime.

343551 is strictly pandigital in base 7.

343551 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 1088.

It is an arithmetic number, because the mean of its divisors is an integer number (32256).

2³⁴³⁵⁵¹ is an apocalyptic number.

343551 is a deficient number, since it is larger than the sum of its proper divisors (172545).

343551 is a wasteful number, since it uses less digits than its factorization.

343551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 900, while the sum is 21.

The square root of 343551 is about 586.1322376393. The cubic root of 343551 is about 70.0374629400.

Adding to 343551 its reverse (155343), we get a palindrome (498894).

It can be divided in two parts, 3435 and 51, that added together give a triangular number (3486 = T₈₃).

The spelling of 343551 in words is "three hundred forty-three thousand, five hundred fifty-one".