202431121 has 8 divisors (see below), whose sum is σ = 215883360. Its totient is φ = 189150528.

The previous prime is 202431091. The next prime is 202431133. The reversal of 202431121 is 121134202.

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

It is a cyclic number.

It is not a de Polignac number, because 202431121 - 2⁷ = 202430993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202431095 and 202431104.

It is not an unprimeable number, because it can be changed into a prime (202431161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40471 + ... + 45196.

It is an arithmetic number, because the mean of its divisors is an integer number (26985420).

Almost surely, 2^202431121 is an apocalyptic number.

It is an amenable number.

202431121 is a deficient number, since it is larger than the sum of its proper divisors (13452239).

202431121 is a wasteful number, since it uses less digits than its factorization.

202431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85823.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 202431121 is about 14227.8291035562. The cubic root of 202431121 is about 587.1635578426.

Adding to 202431121 its reverse (121134202), we get a palindrome (323565323).

The spelling of 202431121 in words is "two hundred two million, four hundred thirty-one thousand, one hundred twenty-one".