203413431321 has 48 divisors (see below), whose sum is σ = 310651461120. Its totient is φ = 128088449280.

The previous prime is 203413431289. The next prime is 203413431329. The reversal of 203413431321 is 123134314302.

It is a happy number.

203413431321 is a `hidden beast` number, since 2 + 0 + 341 + 3 + 4 + 313 + 2 + 1 = 666.

It is not a de Polignac number, because 203413431321 - 2⁵ = 203413431289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203413431329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1987621 + ... + 2087453.

It is an arithmetic number, because the mean of its divisors is an integer number (6471905440).

Almost surely, 2^203413431321 is an apocalyptic number.

It is an amenable number.

203413431321 is a deficient number, since it is larger than the sum of its proper divisors (107238029799).

203413431321 is a wasteful number, since it uses less digits than its factorization.

203413431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100046 (or 100043 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 203413431321 its reverse (123134314302), we get a palindrome (326547745623).

The spelling of 203413431321 in words is "two hundred three billion, four hundred thirteen million, four hundred thirty-one thousand, three hundred twenty-one".