531232232136 has 16 divisors (see below), whose sum is σ = 1328080580400. Its totient is φ = 177077410704.

The previous prime is 531232232129. The next prime is 531232232183. The reversal of 531232232136 is 631232232135.

It is a super-4 number, since 4×531232232136⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 531232232097 and 531232232106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11067338146 + ... + 11067338193.

It is an arithmetic number, because the mean of its divisors is an integer number (83005036275).

Almost surely, 2^531232232136 is an apocalyptic number.

It is an amenable number.

531232232136 is an abundant number, since it is smaller than the sum of its proper divisors (796848348264).

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

531232232136 is a wasteful number, since it uses less digits than its factorization.

531232232136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22134676348 (or 22134676344 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

Subtracting 531232232136 from its reverse (631232232135), we obtain a palindrome (99999999999).

The spelling of 531232232136 in words is "five hundred thirty-one billion, two hundred thirty-two million, two hundred thirty-two thousand, one hundred thirty-six".