531243001 has 8 divisors (see below), whose sum is σ = 553414400. Its totient is φ = 509386320.

The previous prime is 531242981. The next prime is 531243017. The reversal of 531243001 is 100342135.

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 531243001 - 2⁵ = 531242969 is a prime.

It is a super-2 number, since 2×531243001² = 564438252222972002, which contains 22 as substring.

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 531243001.

It is not an unprimeable number, because it can be changed into a prime (531243301) 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, 75231 + ... + 81988.

It is an arithmetic number, because the mean of its divisors is an integer number (69176800).

Almost surely, 2^531243001 is an apocalyptic number.

It is an amenable number.

531243001 is a deficient number, since it is larger than the sum of its proper divisors (22171399).

531243001 is a wasteful number, since it uses less digits than its factorization.

531243001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157359.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 531243001 is about 23048.7093131047. The cubic root of 531243001 is about 809.8993935911.

Adding to 531243001 its reverse (100342135), we get a palindrome (631585136).

The spelling of 531243001 in words is "five hundred thirty-one million, two hundred forty-three thousand, one".