531690543923 has 24 divisors (see below), whose sum is σ = 697990549680. Its totient is φ = 400017952320.

The previous prime is 531690543919. The next prime is 531690543947. The reversal of 531690543923 is 329345096135.

It is not a de Polignac number, because 531690543923 - 2² = 531690543919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531690543913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16991936 + ... + 17023197.

It is an arithmetic number, because the mean of its divisors is an integer number (29082939570).

Almost surely, 2^531690543923 is an apocalyptic number.

531690543923 is a deficient number, since it is larger than the sum of its proper divisors (166300005757).

531690543923 is a wasteful number, since it uses less digits than its factorization.

531690543923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34015187 (or 34015180 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 50.

The spelling of 531690543923 in words is "five hundred thirty-one billion, six hundred ninety million, five hundred forty-three thousand, nine hundred twenty-three".