231134023311 has 4 divisors (see below), whose sum is σ = 308178697752. Its totient is φ = 154089348872.

The previous prime is 231134023261. The next prime is 231134023339. The reversal of 231134023311 is 113320431132.

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

It is a cyclic number.

It is not a de Polignac number, because 231134023311 - 2¹⁵ = 231133990543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231134023361) 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, 38522337216 + ... + 38522337221.

It is an arithmetic number, because the mean of its divisors is an integer number (77044674438).

Almost surely, 2^231134023311 is an apocalyptic number.

231134023311 is a deficient number, since it is larger than the sum of its proper divisors (77044674441).

231134023311 is an equidigital number, since it uses as much as digits as its factorization.

231134023311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77044674440.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 231134023311 its reverse (113320431132), we get a palindrome (344454454443).

The spelling of 231134023311 in words is "two hundred thirty-one billion, one hundred thirty-four million, twenty-three thousand, three hundred eleven".