626231 has 4 divisors (see below), whose sum is σ = 646464. Its totient is φ = 606000.

The previous prime is 626207. The next prime is 626239. The reversal of 626231 is 132626.

626231 = T₁₁₀ + T₁₁₁ + ... + T₁₇₁.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626231 is a prime.

It is a super-2 number, since 2×626231² = 784330530722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 626231.

It is not an unprimeable number, because it can be changed into a prime (626239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10070 + ... + 10131.

It is an arithmetic number, because the mean of its divisors is an integer number (161616).

2⁶²⁶²³¹ is an apocalyptic number.

626231 is a deficient number, since it is larger than the sum of its proper divisors (20233).

626231 is a wasteful number, since it uses less digits than its factorization.

626231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20232.

The product of its digits is 432, while the sum is 20.

The square root of 626231 is about 791.3475848197. The cubic root of 626231 is about 85.5548933315.

Adding to 626231 its reverse (132626), we get a palindrome (758857).

The spelling of 626231 in words is "six hundred twenty-six thousand, two hundred thirty-one".