351623 has 4 divisors (see below), whose sum is σ = 353400. Its totient is φ = 349848.

The previous prime is 351599. The next prime is 351643. The reversal of 351623 is 326153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351595 and 351604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351643) 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 3 ways as a sum of consecutive naturals, for example, 548 + ... + 1001.

It is an arithmetic number, because the mean of its divisors is an integer number (88350).

2³⁵¹⁶²³ is an apocalyptic number.

351623 is a deficient number, since it is larger than the sum of its proper divisors (1777).

351623 is a wasteful number, since it uses less digits than its factorization.

351623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

The product of its digits is 540, while the sum is 20.

The square root of 351623 is about 592.9780771664. The cubic root of 351623 is about 70.5817504800.

Adding to 351623 its reverse (326153), we get a palindrome (677776).

The spelling of 351623 in words is "three hundred fifty-one thousand, six hundred twenty-three".