531141042121 has 8 divisors (see below), whose sum is σ = 581777206920. Its totient is φ = 482659607808.

The previous prime is 531141042097. The next prime is 531141042127. The reversal of 531141042121 is 121240141135.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 166398726400 + 364742315721 = 407920^2 + 603939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531141042121 - 2⁷ = 531141041993 is a prime.

It is a super-2 number, since 2×531141042121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531141042127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538682106 + ... + 538683091.

It is an arithmetic number, because the mean of its divisors is an integer number (72722150865).

Almost surely, 2^531141042121 is an apocalyptic number.

It is an amenable number.

531141042121 is a deficient number, since it is larger than the sum of its proper divisors (50636164799).

531141042121 is a wasteful number, since it uses less digits than its factorization.

531141042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077365243.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 531141042121 its reverse (121240141135), we get a palindrome (652381183256).

The spelling of 531141042121 in words is "five hundred thirty-one billion, one hundred forty-one million, forty-two thousand, one hundred twenty-one".