231132311000021 has 8 divisors (see below), whose sum is σ = 231941771880000. Its totient is φ = 230323274929440.

The previous prime is 231132310999999. The next prime is 231132311000089. The reversal of 231132311000021 is 120000113231132.

It is a happy number.

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 231132311000021 - 2¹⁰ = 231132310998997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231132310999957 and 231132311000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132311000821) 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, 105112256 + ... + 107288633.

It is an arithmetic number, because the mean of its divisors is an integer number (28992721485000).

Almost surely, 2^{231132311000021} is an apocalyptic number.

It is an amenable number.

231132311000021 is a deficient number, since it is larger than the sum of its proper divisors (809460879979).

231132311000021 is a wasteful number, since it uses less digits than its factorization.

231132311000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212404699.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231132311000021 its reverse (120000113231132), we get a palindrome (351132424231153).

The spelling of 231132311000021 in words is "two hundred thirty-one trillion, one hundred thirty-two billion, three hundred eleven million, twenty-one", and thus it is an aban number.