231233403144311 has 4 divisors (see below), whose sum is σ = 231899781828072. Its totient is φ = 230567024460552.

The previous prime is 231233403144277. The next prime is 231233403144319. The reversal of 231233403144311 is 113441304332132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231233403144311 is a prime.

It is a super-2 number, since 2×231233403144311² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231233403144319) 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, 333189341360 + ... + 333189342053.

It is an arithmetic number, because the mean of its divisors is an integer number (57974945457018).

Almost surely, 2^{231233403144311} is an apocalyptic number.

231233403144311 is a deficient number, since it is larger than the sum of its proper divisors (666378683761).

231233403144311 is an equidigital number, since it uses as much as digits as its factorization.

231233403144311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666378683760.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 231233403144311 its reverse (113441304332132), we get a palindrome (344674707476443).

The spelling of 231233403144311 in words is "two hundred thirty-one trillion, two hundred thirty-three billion, four hundred three million, one hundred forty-four thousand, three hundred eleven".