531000623 has 2 divisors, whose sum is σ = 531000624. Its totient is φ = 531000622.

The previous prime is 531000599. The next prime is 531000647. The reversal of 531000623 is 326000135.

It is a balanced prime because it is at equal distance from previous prime (531000599) and next prime (531000647).

It is a cyclic number.

It is not a de Polignac number, because 531000623 - 2¹⁸ = 530738479 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 531000595 and 531000604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531000683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265500311 + 265500312.

It is an arithmetic number, because the mean of its divisors is an integer number (265500312).

Almost surely, 2^531000623 is an apocalyptic number.

531000623 is a deficient number, since it is larger than the sum of its proper divisors (1).

531000623 is an equidigital number, since it uses as much as digits as its factorization.

531000623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 531000623 is about 23043.4507615504. The cubic root of 531000623 is about 809.7762034776.

Adding to 531000623 its reverse (326000135), we get a palindrome (857000758).

The spelling of 531000623 in words is "five hundred thirty-one million, six hundred twenty-three", and thus it is an aban number.