203431411421 has 8 divisors (see below), whose sum is σ = 246169103040. Its totient is φ = 164112735168.

The previous prime is 203431411409. The next prime is 203431411439. The reversal of 203431411421 is 124114134302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203431411421 - 2²² = 203427217117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203431413421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854753711 + ... + 854753948.

It is an arithmetic number, because the mean of its divisors is an integer number (30771137880).

Almost surely, 2^203431411421 is an apocalyptic number.

It is an amenable number.

203431411421 is a deficient number, since it is larger than the sum of its proper divisors (42737691619).

203431411421 is a wasteful number, since it uses less digits than its factorization.

203431411421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709507683.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 203431411421 its reverse (124114134302), we get a palindrome (327545545723).

The spelling of 203431411421 in words is "two hundred three billion, four hundred thirty-one million, four hundred eleven thousand, four hundred twenty-one".