203313424 has 20 divisors (see below), whose sum is σ = 403528860. Its totient is φ = 99176960.

The previous prime is 203313419. The next prime is 203313479. The reversal of 203313424 is 424313302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 188567824 = 3840^2 + 13732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203313395 and 203313404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154309 + ... + 155620.

It is an arithmetic number, because the mean of its divisors is an integer number (20176443).

Almost surely, 2^203313424 is an apocalyptic number.

It is an amenable number.

203313424 is a deficient number, since it is larger than the sum of its proper divisors (200215436).

203313424 is a wasteful number, since it uses less digits than its factorization.

203313424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309978 (or 309972 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 203313424 is about 14258.8016326759. The cubic root of 203313424 is about 588.0153789922.

Adding to 203313424 its reverse (424313302), we get a palindrome (627626726).

The spelling of 203313424 in words is "two hundred three million, three hundred thirteen thousand, four hundred twenty-four".