231038886 has 24 divisors (see below), whose sum is σ = 500358600. Its totient is φ = 71088576.

The previous prime is 231038861. The next prime is 231038947. The reversal of 231038886 is 688830132.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112911 + ... + 114938.

It is an arithmetic number, because the mean of its divisors is an integer number (20848275).

Almost surely, 2^231038886 is an apocalyptic number.

231038886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

231038886 is an abundant number, since it is smaller than the sum of its proper divisors (269319714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231038886 is a wasteful number, since it uses less digits than its factorization.

231038886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227880 (or 227867 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 231038886 is about 15199.9633552190. The cubic root of 231038886 is about 613.6136715330.

The spelling of 231038886 in words is "two hundred thirty-one million, thirty-eight thousand, eight hundred eighty-six".