231042421 has 8 divisors (see below), whose sum is σ = 236880000. Its totient is φ = 225214560.

The previous prime is 231042419. The next prime is 231042433. The reversal of 231042421 is 124240132.

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 231042421 - 2¹ = 231042419 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 (231042481) 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 7 ways as a sum of consecutive naturals, for example, 80550 + ... + 83368.

It is an arithmetic number, because the mean of its divisors is an integer number (29610000).

Almost surely, 2^231042421 is an apocalyptic number.

It is an amenable number.

231042421 is a deficient number, since it is larger than the sum of its proper divisors (5837579).

231042421 is a wasteful number, since it uses less digits than its factorization.

231042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 231042421 is about 15200.0796379493. The cubic root of 231042421 is about 613.6168010397.

Adding to 231042421 its reverse (124240132), we get a palindrome (355282553).

The spelling of 231042421 in words is "two hundred thirty-one million, forty-two thousand, four hundred twenty-one".