231535411155 has 48 divisors (see below), whose sum is σ = 426387761280. Its totient is φ = 116005042944.

The previous prime is 231535411147. The next prime is 231535411157. The reversal of 231535411155 is 551114535132.

231535411155 is a `hidden beast` number, since 2 + 3 + 1 + 53 + 541 + 11 + 55 = 666.

It is not a de Polignac number, because 231535411155 - 2³ = 231535411147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231535411157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2349307 + ... + 2445876.

It is an arithmetic number, because the mean of its divisors is an integer number (8883078360).

Almost surely, 2^231535411155 is an apocalyptic number.

231535411155 is a deficient number, since it is larger than the sum of its proper divisors (194852350125).

231535411155 is a wasteful number, since it uses less digits than its factorization.

231535411155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795260 (or 4795257 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

Adding to 231535411155 its reverse (551114535132), we get a palindrome (782649946287).

The spelling of 231535411155 in words is "two hundred thirty-one billion, five hundred thirty-five million, four hundred eleven thousand, one hundred fifty-five".