231113885 has 4 divisors (see below), whose sum is σ = 277336668. Its totient is φ = 184891104.

The previous prime is 231113851. The next prime is 231113893. The reversal of 231113885 is 588311132.

231113885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150724729 + 80389156 = 12277^2 + 8966^2 .

It is a cyclic number.

It is not a de Polignac number, because 231113885 - 2¹² = 231109789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23111384 + ... + 23111393.

It is an arithmetic number, because the mean of its divisors is an integer number (69334167).

Almost surely, 2^231113885 is an apocalyptic number.

It is an amenable number.

231113885 is a deficient number, since it is larger than the sum of its proper divisors (46222783).

231113885 is an equidigital number, since it uses as much as digits as its factorization.

231113885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46222782.

The product of its digits is 5760, while the sum is 32.

The square root of 231113885 is about 15202.4302333541. The cubic root of 231113885 is about 613.6800606934.

The spelling of 231113885 in words is "two hundred thirty-one million, one hundred thirteen thousand, eight hundred eighty-five".