12231858 has 32 divisors (see below), whose sum is σ = 26389440. Its totient is φ = 3767040.

The previous prime is 12231853. The next prime is 12231859. The reversal of 12231858 is 85813221.

12231858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12231853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3366 + ... + 5982.

It is an arithmetic number, because the mean of its divisors is an integer number (824670).

Almost surely, 2^12231858 is an apocalyptic number.

12231858 is an abundant number, since it is smaller than the sum of its proper divisors (14157582).

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

12231858 is a wasteful number, since it uses less digits than its factorization.

12231858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682.

The product of its digits is 3840, while the sum is 30.

The square root of 12231858 is about 3497.4073254341. The cubic root of 12231858 is about 230.4079590108.

It can be divided in two parts, 1223 and 1858, that added together give a triangular number (3081 = T₇₈).

The spelling of 12231858 in words is "twelve million, two hundred thirty-one thousand, eight hundred fifty-eight".