531033401 has 4 divisors (see below), whose sum is σ = 542332032. Its totient is φ = 519734772.

The previous prime is 531033389. The next prime is 531033409. The reversal of 531033401 is 104330135.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-531033401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531033409) 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 in 3 ways as a sum of consecutive naturals, for example, 5649245 + ... + 5649338.

It is an arithmetic number, because the mean of its divisors is an integer number (135583008).

Almost surely, 2^531033401 is an apocalyptic number.

It is an amenable number.

531033401 is a deficient number, since it is larger than the sum of its proper divisors (11298631).

531033401 is a wasteful number, since it uses less digits than its factorization.

531033401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11298630.

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

The square root of 531033401 is about 23044.1619721786. The cubic root of 531033401 is about 809.7928652900.

Adding to 531033401 its reverse (104330135), we get a palindrome (635363536).

The spelling of 531033401 in words is "five hundred thirty-one million, thirty-three thousand, four hundred one".