787231 has 4 divisors (see below), whose sum is σ = 789264. Its totient is φ = 785200.

The previous prime is 787217. The next prime is 787243. The reversal of 787231 is 132787.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 787231 - 2⁹ = 786719 is a prime.

It is a super-2 number, since 2×787231² = 1239465294722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 787231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235 + ... + 1276.

It is an arithmetic number, because the mean of its divisors is an integer number (197316).

2⁷⁸⁷²³¹ is an apocalyptic number.

787231 is a deficient number, since it is larger than the sum of its proper divisors (2033).

787231 is a wasteful number, since it uses less digits than its factorization.

787231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its digits is 2352, while the sum is 28.

The square root of 787231 is about 887.2603901899. The cubic root of 787231 is about 92.3352216145.

The spelling of 787231 in words is "seven hundred eighty-seven thousand, two hundred thirty-one".