531215422104 has 128 divisors (see below), whose sum is σ = 1381484160000. Its totient is φ = 170016000000.

The previous prime is 531215422093. The next prime is 531215422109. The reversal of 531215422104 is 401224512135.

It is a super-2 number, since 2×531215422104² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531215422109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131194672 + ... + 131198720.

It is an arithmetic number, because the mean of its divisors is an integer number (10792845000).

Almost surely, 2^531215422104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531215422104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690742080000).

531215422104 is an abundant number, since it is smaller than the sum of its proper divisors (850268737896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531215422104 is a wasteful number, since it uses less digits than its factorization.

531215422104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089 (or 5085 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 531215422104 its reverse (401224512135), we get a palindrome (932439934239).

The spelling of 531215422104 in words is "five hundred thirty-one billion, two hundred fifteen million, four hundred twenty-two thousand, one hundred four".