231531503113355 has 16 divisors (see below), whose sum is σ = 289921152890880. Its totient is φ = 177169827756768.

The previous prime is 231531503113343. The next prime is 231531503113453. The reversal of 231531503113355 is 553311305135132.

It is a cyclic number.

It is not a de Polignac number, because 231531503113355 - 2¹² = 231531503109259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205095 + ... + 21631584.

It is an arithmetic number, because the mean of its divisors is an integer number (18120072055680).

Almost surely, 2^{231531503113355} is an apocalyptic number.

231531503113355 is a deficient number, since it is larger than the sum of its proper divisors (58389649777525).

231531503113355 is a wasteful number, since it uses less digits than its factorization.

231531503113355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23921170.

The product of its (nonzero) digits is 303750, while the sum is 41.

Adding to 231531503113355 its reverse (553311305135132), we get a palindrome (784842808248487).

The spelling of 231531503113355 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred three million, one hundred thirteen thousand, three hundred fifty-five".