231515522335121 has 8 divisors (see below), whose sum is σ = 236445332747520. Its totient is φ = 226585876432608.

The previous prime is 231515522335109. The next prime is 231515522335133. The reversal of 231515522335121 is 121533225515132.

It is an interprime number because it is at equal distance from previous prime (231515522335109) and next prime (231515522335133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231515522335121 - 2³⁸ = 231240644428177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231515522335021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38280821 + ... + 43914146.

It is an arithmetic number, because the mean of its divisors is an integer number (29555666593440).

Almost surely, 2^{231515522335121} is an apocalyptic number.

It is an amenable number.

231515522335121 is a deficient number, since it is larger than the sum of its proper divisors (4929810412399).

231515522335121 is an equidigital number, since it uses as much as digits as its factorization.

231515522335121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82254943.

The product of its digits is 270000, while the sum is 41.

The spelling of 231515522335121 in words is "two hundred thirty-one trillion, five hundred fifteen billion, five hundred twenty-two million, three hundred thirty-five thousand, one hundred twenty-one".