231351836 has 24 divisors (see below), whose sum is σ = 409812480. Its totient is φ = 114270912.

The previous prime is 231351829. The next prime is 231351839. The reversal of 231351836 is 638153132.

231351836 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231351839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135806 + ... + 137498.

It is an arithmetic number, because the mean of its divisors is an integer number (17075520).

Almost surely, 2^231351836 is an apocalyptic number.

It is an amenable number.

231351836 is a deficient number, since it is larger than the sum of its proper divisors (178460644).

231351836 is a wasteful number, since it uses less digits than its factorization.

231351836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093 (or 2091 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 231351836 is about 15210.2543042515. The cubic root of 231351836 is about 613.8906000378.

The spelling of 231351836 in words is "two hundred thirty-one million, three hundred fifty-one thousand, eight hundred thirty-six".