231986352 has 160 divisors (see below), whose sum is σ = 719953920. Its totient is φ = 63590400.

The previous prime is 231986329. The next prime is 231986357. The reversal of 231986352 is 253689132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 231986352.

It is not an unprimeable number, because it can be changed into a prime (231986357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200977 + ... + 202127.

It is an arithmetic number, because the mean of its divisors is an integer number (4499712).

Almost surely, 2^231986352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231986352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359976960).

231986352 is an abundant number, since it is smaller than the sum of its proper divisors (487967568).

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

231986352 is a wasteful number, since it uses less digits than its factorization.

231986352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1205 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 231986352 is about 15231.0981875898. The cubic root of 231986352 is about 614.4513157687.

The spelling of 231986352 in words is "two hundred thirty-one million, nine hundred eighty-six thousand, three hundred fifty-two".