231375860 has 48 divisors (see below), whose sum is σ = 508951296. Its totient is φ = 88188672.

The previous prime is 231375853. The next prime is 231375869. The reversal of 231375860 is 68573132.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 231375860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231375869) 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, 143177 + ... + 144783.

It is an arithmetic number, because the mean of its divisors is an integer number (10603152).

Almost surely, 2^231375860 is an apocalyptic number.

231375860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231375860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254475648).

231375860 is an abundant number, since it is smaller than the sum of its proper divisors (277575436).

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

231375860 is a wasteful number, since it uses less digits than its factorization.

231375860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 231375860 is about 15211.0440141366. The cubic root of 231375860 is about 613.9118484786.

The spelling of 231375860 in words is "two hundred thirty-one million, three hundred seventy-five thousand, eight hundred sixty".