231301233021 has 8 divisors (see below), whose sum is σ = 308418568864. Its totient is φ = 154192359600.

The previous prime is 231301233013. The next prime is 231301233043. The reversal of 231301233021 is 120332103132.

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

It is not a de Polignac number, because 231301233021 - 2³ = 231301233013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301233061) 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, 2051551 + ... + 2161356.

It is an arithmetic number, because the mean of its divisors is an integer number (38552321108).

Almost surely, 2^231301233021 is an apocalyptic number.

It is an amenable number.

231301233021 is a deficient number, since it is larger than the sum of its proper divisors (77117335843).

231301233021 is a wasteful number, since it uses less digits than its factorization.

231301233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231211.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231301233021 its reverse (120332103132), we get a palindrome (351633336153).

The spelling of 231301233021 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirty-three thousand, twenty-one".