231443204040140 has 12 divisors (see below), whose sum is σ = 486030728484336. Its totient is φ = 92577281616048.

The previous prime is 231443204040137. The next prime is 231443204040143. The reversal of 231443204040140 is 41040402344132.

It is an interprime number because it is at equal distance from previous prime (231443204040137) and next prime (231443204040143).

It is a junction number, because it is equal to n+sod(n) for n = 231443204040097 and 231443204040106.

It is not an unprimeable number, because it can be changed into a prime (231443204040143) 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, 5786080100984 + ... + 5786080101023.

It is an arithmetic number, because the mean of its divisors is an integer number (40502560707028).

Almost surely, 2^{231443204040140} is an apocalyptic number.

231443204040140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231443204040140 is an abundant number, since it is smaller than the sum of its proper divisors (254587524444196).

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

231443204040140 is a wasteful number, since it uses less digits than its factorization.

231443204040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572160202016 (or 11572160202014 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 231443204040140 its reverse (41040402344132), we get a palindrome (272483606384272).

The spelling of 231443204040140 in words is "two hundred thirty-one trillion, four hundred forty-three billion, two hundred four million, forty thousand, one hundred forty".