531241133 has 4 divisors (see below), whose sum is σ = 540245280. Its totient is φ = 522236988.

The previous prime is 531241093. The next prime is 531241171. The reversal of 531241133 is 331142135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531241133 - 2⁶ = 531241069 is a prime.

It is a super-2 number, since 2×531241133² = 564434282782247378, 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 = 531241099 and 531241108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241133) 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, 4501985 + ... + 4502102.

It is an arithmetic number, because the mean of its divisors is an integer number (135061320).

Almost surely, 2^531241133 is an apocalyptic number.

It is an amenable number.

531241133 is a deficient number, since it is larger than the sum of its proper divisors (9004147).

531241133 is an equidigital number, since it uses as much as digits as its factorization.

531241133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9004146.

The product of its digits is 1080, while the sum is 23.

The square root of 531241133 is about 23048.6687901926. The cubic root of 531241133 is about 809.8984443119.

Adding to 531241133 its reverse (331142135), we get a palindrome (862383268).

The spelling of 531241133 in words is "five hundred thirty-one million, two hundred forty-one thousand, one hundred thirty-three".