203481 has 12 divisors (see below), whose sum is σ = 307008. Its totient is φ = 129624.

The previous prime is 203461. The next prime is 203531. The reversal of 203481 is 184302.

It is a happy number.

It is not a de Polignac number, because 203481 - 2⁵ = 203449 is a prime.

It is a super-2 number, since 2×203481² = 82809034722, which contains 22 as substring.

203481 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 203481.

It is not an unprimeable number, because it can be changed into a prime (203431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285 + ... + 698.

It is an arithmetic number, because the mean of its divisors is an integer number (25584).

2²⁰³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

203481 is a deficient number, since it is larger than the sum of its proper divisors (103527).

203481 is a wasteful number, since it uses less digits than its factorization.

203481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 203481 is about 451.0886830768. The cubic root of 203481 is about 58.8176886946.

Adding to 203481 its reverse (184302), we get a palindrome (387783).

The spelling of 203481 in words is "two hundred three thousand, four hundred eighty-one".