231310110021 has 8 divisors (see below), whose sum is σ = 308427014400. Its totient is φ = 154199972832.

The previous prime is 231310110019. The next prime is 231310110103. The reversal of 231310110021 is 120011013132.

It is a happy number.

231310110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 231310110021 - 2¹ = 231310110019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310115021) 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, 1611496 + ... + 1749153.

It is an arithmetic number, because the mean of its divisors is an integer number (38553376800).

Almost surely, 2^231310110021 is an apocalyptic number.

It is an amenable number.

231310110021 is a deficient number, since it is larger than the sum of its proper divisors (77116904379).

231310110021 is a wasteful number, since it uses less digits than its factorization.

231310110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383595.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 231310110021 its reverse (120011013132), we get a palindrome (351321123153).

The spelling of 231310110021 in words is "two hundred thirty-one billion, three hundred ten million, one hundred ten thousand, twenty-one".