231421256823 has 8 divisors (see below), whose sum is σ = 318515278336. Its totient is φ = 149304036600.

The previous prime is 231421256809. The next prime is 231421256837. The reversal of 231421256823 is 328652124132.

231421256823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231421256809) and next prime (231421256837).

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

It is not a de Polignac number, because 231421256823 - 2¹⁴ = 231421240439 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 (231421256123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244200213 + ... + 1244200398.

It is an arithmetic number, because the mean of its divisors is an integer number (39814409792).

Almost surely, 2^231421256823 is an apocalyptic number.

231421256823 is a deficient number, since it is larger than the sum of its proper divisors (87094021513).

231421256823 is a wasteful number, since it uses less digits than its factorization.

231421256823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488400645.

The product of its digits is 138240, while the sum is 39.

The spelling of 231421256823 in words is "two hundred thirty-one billion, four hundred twenty-one million, two hundred fifty-six thousand, eight hundred twenty-three".