231223110240340 has 12 divisors (see below), whose sum is σ = 485568531504756. Its totient is φ = 92489244096128.

The previous prime is 231223110240271. The next prime is 231223110240341. The reversal of 231223110240340 is 43042011322132.

It can be written as a sum of positive squares in 2 ways, for example, as 45555561264196 + 185667548976144 = 6749486^2 + 13625988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231223110240299 and 231223110240308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223110240341) 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, 5780577755989 + ... + 5780577756028.

It is an arithmetic number, because the mean of its divisors is an integer number (40464044292063).

Almost surely, 2^{231223110240340} is an apocalyptic number.

231223110240340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231223110240340 is an abundant number, since it is smaller than the sum of its proper divisors (254345421264416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231223110240340 is a wasteful number, since it uses less digits than its factorization.

231223110240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11561155512026 (or 11561155512024 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 231223110240340 its reverse (43042011322132), we get a palindrome (274265121562472).

The spelling of 231223110240340 in words is "two hundred thirty-one trillion, two hundred twenty-three billion, one hundred ten million, two hundred forty thousand, three hundred forty".