531020673 has 12 divisors (see below), whose sum is σ = 769310308. Its totient is φ = 352961280.

The previous prime is 531020671. The next prime is 531020689. The reversal of 531020673 is 376020135.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 351675009 + 179345664 = 18753^2 + 13392^2 .

It is not a de Polignac number, because 531020673 - 2¹ = 531020671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531020671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84508 + ... + 90573.

Almost surely, 2^531020673 is an apocalyptic number.

It is an amenable number.

531020673 is a deficient number, since it is larger than the sum of its proper divisors (238289635).

531020673 is a wasteful number, since it uses less digits than its factorization.

531020673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175424 (or 175421 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 531020673 is about 23043.8858051328. The cubic root of 531020673 is about 809.7863954358.

The spelling of 531020673 in words is "five hundred thirty-one million, twenty thousand, six hundred seventy-three".