231511124234011 has 16 divisors (see below), whose sum is σ = 236356388553600. Its totient is φ = 226716741839808.

The previous prime is 231511124233997. The next prime is 231511124234017. The reversal of 231511124234011 is 110432421115132.

231511124234011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231511124234011 - 2³³ = 231502534299419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231511124234017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37296436 + ... + 43058638.

It is an arithmetic number, because the mean of its divisors is an integer number (14772274284600).

Almost surely, 2^{231511124234011} is an apocalyptic number.

231511124234011 is a deficient number, since it is larger than the sum of its proper divisors (4845264319589).

231511124234011 is a wasteful number, since it uses less digits than its factorization.

231511124234011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766618.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 231511124234011 its reverse (110432421115132), we get a palindrome (341943545349143).

The spelling of 231511124234011 in words is "two hundred thirty-one trillion, five hundred eleven billion, one hundred twenty-four million, two hundred thirty-four thousand, eleven".