231122312123213 has 32 divisors (see below), whose sum is σ = 269278334357760. Its totient is φ = 194281939445760.

The previous prime is 231122312123189. The next prime is 231122312123239. The reversal of 231122312123213 is 312321213221132.

It is a cyclic number.

It is not a de Polignac number, because 231122312123213 - 2¹² = 231122312119117 is a prime.

It is a super-2 number, since 2×231122312123213² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122312123273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1066145753 + ... + 1066362513.

It is an arithmetic number, because the mean of its divisors is an integer number (8414947948680).

Almost surely, 2^{231122312123213} is an apocalyptic number.

It is an amenable number.

231122312123213 is a deficient number, since it is larger than the sum of its proper divisors (38156022234547).

231122312123213 is a wasteful number, since it uses less digits than its factorization.

231122312123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228677.

The product of its digits is 5184, while the sum is 29.

Adding to 231122312123213 its reverse (312321213221132), we get a palindrome (543443525344345).

The spelling of 231122312123213 in words is "two hundred thirty-one trillion, one hundred twenty-two billion, three hundred twelve million, one hundred twenty-three thousand, two hundred thirteen".