231515010344011 has 32 divisors (see below), whose sum is σ = 250205318737920. Its totient is φ = 213561428572800.

The previous prime is 231515010343963. The next prime is 231515010344027. The reversal of 231515010344011 is 110443010515132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231515010344011 - 2¹¹ = 231515010341963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231515010344071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7852476876 + ... + 7852506358.

It is an arithmetic number, because the mean of its divisors is an integer number (7818916210560).

Almost surely, 2^{231515010344011} is an apocalyptic number.

231515010344011 is a deficient number, since it is larger than the sum of its proper divisors (18690308393909).

231515010344011 is a wasteful number, since it uses less digits than its factorization.

231515010344011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42987.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 231515010344011 its reverse (110443010515132), we get a palindrome (341958020859143).

The spelling of 231515010344011 in words is "two hundred thirty-one trillion, five hundred fifteen billion, ten million, three hundred forty-four thousand, eleven".