623831 has 8 divisors (see below), whose sum is σ = 686784. Its totient is φ = 563040.

The previous prime is 623803. The next prime is 623839. The reversal of 623831 is 138326.

623831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 623831 - 2⁶ = 623767 is a prime.

It is a super-2 number, since 2×623831² = 778330233122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623797 and 623806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (85848).

2⁶²³⁸³¹ is an apocalyptic number.

623831 is a deficient number, since it is larger than the sum of its proper divisors (62953).

623831 is a wasteful number, since it uses less digits than its factorization.

623831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 864, while the sum is 23.

The square root of 623831 is about 789.8297284858. The cubic root of 623831 is about 85.4454584148.

The spelling of 623831 in words is "six hundred twenty-three thousand, eight hundred thirty-one".