231410221321 has 4 divisors (see below), whose sum is σ = 231421663044. Its totient is φ = 231398779600.

The previous prime is 231410221313. The next prime is 231410221387. The reversal of 231410221321 is 123122014132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80236227600 + 151173993721 = 283260^2 + 388811^2 .

It is a cyclic number.

It is not a de Polignac number, because 231410221321 - 2³ = 231410221313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231410221292 and 231410221301.

It is not an unprimeable number, because it can be changed into a prime (231410221391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690470 + ... + 5730991.

It is an arithmetic number, because the mean of its divisors is an integer number (57855415761).

Almost surely, 2^231410221321 is an apocalyptic number.

It is an amenable number.

231410221321 is a deficient number, since it is larger than the sum of its proper divisors (11441723).

231410221321 is a wasteful number, since it uses less digits than its factorization.

231410221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441722.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 231410221321 its reverse (123122014132), we get a palindrome (354532235453).

The spelling of 231410221321 in words is "two hundred thirty-one billion, four hundred ten million, two hundred twenty-one thousand, three hundred twenty-one".