531144047 has 8 divisors (see below), whose sum is σ = 607201056. Its totient is φ = 455131872.

The previous prime is 531144043. The next prime is 531144059. The reversal of 531144047 is 740441135.

It is a happy number.

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 531144047 - 2² = 531144043 is a prime.

It is a super-2 number, since 2×531144047² = 564227997327076418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531144043) 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 7 ways as a sum of consecutive naturals, for example, 19973 + ... + 38225.

It is an arithmetic number, because the mean of its divisors is an integer number (75900132).

Almost surely, 2^531144047 is an apocalyptic number.

531144047 is a deficient number, since it is larger than the sum of its proper divisors (76057009).

531144047 is a wasteful number, since it uses less digits than its factorization.

531144047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22417.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 531144047 is about 23046.5625853401. The cubic root of 531144047 is about 809.8491041373.

The spelling of 531144047 in words is "five hundred thirty-one million, one hundred forty-four thousand, forty-seven".