356403 has 4 divisors (see below), whose sum is σ = 475208. Its totient is φ = 237600.

The previous prime is 356399. The next prime is 356441. The reversal of 356403 is 304653.

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

It is not a de Polignac number, because 356403 - 2² = 356399 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 356403.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 356403.

It is not an unprimeable number, because it can be changed into a prime (356443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59398 + ... + 59403.

It is an arithmetic number, because the mean of its divisors is an integer number (118802).

2³⁵⁶⁴⁰³ is an apocalyptic number.

356403 is a deficient number, since it is larger than the sum of its proper divisors (118805).

356403 is a wasteful number, since it uses less digits than its factorization.

356403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118804.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 356403 is about 596.9949748532. The cubic root of 356403 is about 70.9001439611.

The spelling of 356403 in words is "three hundred fifty-six thousand, four hundred three".