231110110312321 has 16 divisors (see below), whose sum is σ = 244982677191120. Its totient is φ = 217268473927680.

The previous prime is 231110110312313. The next prime is 231110110312339. The reversal of 231110110312321 is 123213011011132.

It can be written as a sum of positive squares in 8 ways, for example, as 7598490719296 + 223511619593025 = 2756536^2 + 14950305^2 .

It is a cyclic number.

It is not a de Polignac number, because 231110110312321 - 2³ = 231110110312313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231110110312292 and 231110110312301.

It is not an unprimeable number, because it can be changed into a prime (231110110313321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127727581 + ... + 129524341.

It is an arithmetic number, because the mean of its divisors is an integer number (15311417324445).

Almost surely, 2^{231110110312321} is an apocalyptic number.

It is an amenable number.

231110110312321 is a deficient number, since it is larger than the sum of its proper divisors (13872566878799).

231110110312321 is a wasteful number, since it uses less digits than its factorization.

231110110312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805364.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 231110110312321 its reverse (123213011011132), we get a palindrome (354323121323453).

The spelling of 231110110312321 in words is "two hundred thirty-one trillion, one hundred ten billion, one hundred ten million, three hundred twelve thousand, three hundred twenty-one".