231401760 has 96 divisors (see below), whose sum is σ = 767309760. Its totient is φ = 58457088.

The previous prime is 231401749. The next prime is 231401767. The reversal of 231401760 is 67104132.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231401760.

It is not an unprimeable number, because it can be changed into a prime (231401767) 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 15 ways as a sum of consecutive naturals, for example, 3567 + ... + 21806.

It is an arithmetic number, because the mean of its divisors is an integer number (7992810).

Almost surely, 2^231401760 is an apocalyptic number.

231401760 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 231401760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383654880).

231401760 is an abundant number, since it is smaller than the sum of its proper divisors (535908000).

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

231401760 is a wasteful number, since it uses less digits than its factorization.

231401760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25410 (or 25402 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 231401760 is about 15211.8953454196. The cubic root of 231401760 is about 613.9347545323.

Adding to 231401760 its reverse (67104132), we get a palindrome (298505892).

The spelling of 231401760 in words is "two hundred thirty-one million, four hundred one thousand, seven hundred sixty".