231303421 has 4 divisors (see below), whose sum is σ = 231465600. Its totient is φ = 231141244.

The previous prime is 231303419. The next prime is 231303439. The reversal of 231303421 is 124303132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231303421 - 2¹ = 231303419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78931 + ... + 81808.

It is an arithmetic number, because the mean of its divisors is an integer number (57866400).

Almost surely, 2^231303421 is an apocalyptic number.

It is an amenable number.

231303421 is a deficient number, since it is larger than the sum of its proper divisors (162179).

231303421 is a wasteful number, since it uses less digits than its factorization.

231303421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162178.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231303421 is about 15208.6626959769. The cubic root of 231303421 is about 613.8477740872.

Adding to 231303421 its reverse (124303132), we get a palindrome (355606553).

The spelling of 231303421 in words is "two hundred thirty-one million, three hundred three thousand, four hundred twenty-one".