531540233 has 8 divisors (see below), whose sum is σ = 618936768. Its totient is φ = 447009264.

The previous prime is 531540227. The next prime is 531540253. The reversal of 531540233 is 332045135.

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 531540233 - 2⁶ = 531540169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531540223) 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, 715991 + ... + 716732.

It is an arithmetic number, because the mean of its divisors is an integer number (77367096).

Almost surely, 2^531540233 is an apocalyptic number.

531540233 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

531540233 is a deficient number, since it is larger than the sum of its proper divisors (87396535).

531540233 is a wasteful number, since it uses less digits than its factorization.

531540233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432783.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 531540233 is about 23055.1563213091. The cubic root of 531540233 is about 810.0504124494.

Adding to 531540233 its reverse (332045135), we get a palindrome (863585368).

The spelling of 531540233 in words is "five hundred thirty-one million, five hundred forty thousand, two hundred thirty-three".