531541823 has 4 divisors (see below), whose sum is σ = 541570968. Its totient is φ = 521512680.

The previous prime is 531541817. The next prime is 531541831. The reversal of 531541823 is 328145135.

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 531541823 - 2¹⁰ = 531540799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531541823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531546823) 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, 5014493 + ... + 5014598.

It is an arithmetic number, because the mean of its divisors is an integer number (135392742).

Almost surely, 2^531541823 is an apocalyptic number.

531541823 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

531541823 is a deficient number, since it is larger than the sum of its proper divisors (10029145).

531541823 is a wasteful number, since it uses less digits than its factorization.

531541823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10029144.

The product of its digits is 14400, while the sum is 32.

The square root of 531541823 is about 23055.1908038082. The cubic root of 531541823 is about 810.0512201518.

Adding to 531541823 its reverse (328145135), we get a palindrome (859686958).

The spelling of 531541823 in words is "five hundred thirty-one million, five hundred forty-one thousand, eight hundred twenty-three".