231443340412311 has 6 divisors (see below), whose sum is σ = 334307047262240. Its totient is φ = 154295560274868.

The previous prime is 231443340412279. The next prime is 231443340412343. The reversal of 231443340412311 is 113214043344132.

231443340412311 is a `hidden beast` number, since 2 + 3 + 1 + 4 + 4 + 334 + 0 + 4 + 1 + 2 + 311 = 666.

It is an interprime number because it is at equal distance from previous prime (231443340412279) and next prime (231443340412343).

It is not a de Polignac number, because 231443340412311 - 2⁵ = 231443340412279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231443340416311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12857963356231 + ... + 12857963356248.

Almost surely, 2^{231443340412311} is an apocalyptic number.

231443340412311 is a deficient number, since it is larger than the sum of its proper divisors (102863706849929).

231443340412311 is a wasteful number, since it uses less digits than its factorization.

231443340412311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25715926712485 (or 25715926712482 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 231443340412311 its reverse (113214043344132), we get a palindrome (344657383756443).

The spelling of 231443340412311 in words is "two hundred thirty-one trillion, four hundred forty-three billion, three hundred forty million, four hundred twelve thousand, three hundred eleven".