531021100041 has 12 divisors (see below), whose sum is σ = 767276440320. Its totient is φ = 353900545560.

The previous prime is 531021100039. The next prime is 531021100079. The reversal of 531021100041 is 140001120135.

531021100041 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 531021100041 - 2¹ = 531021100039 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531021099987 and 531021100023.

It is not an unprimeable number, because it can be changed into a prime (531021100741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9430465 + ... + 9486606.

It is an arithmetic number, because the mean of its divisors is an integer number (63939703360).

Almost surely, 2^531021100041 is an apocalyptic number.

It is an amenable number.

531021100041 is a deficient number, since it is larger than the sum of its proper divisors (236255340279).

531021100041 is a wasteful number, since it uses less digits than its factorization.

531021100041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18920196 (or 18920193 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 531021100041 its reverse (140001120135), we get a palindrome (671022220176).

The spelling of 531021100041 in words is "five hundred thirty-one billion, twenty-one million, one hundred thousand, forty-one".