331252541452 has 72 divisors (see below), whose sum is σ = 693093451680. Its totient is φ = 138068663040.

The previous prime is 331252541413. The next prime is 331252541479. The reversal of 331252541452 is 254145252133.

It is a happy number.

It is a super-4 number, since 4×331252541452⁴ (a number of 47 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 908433 + ... + 1219735.

It is an arithmetic number, because the mean of its divisors is an integer number (9626297940).

Almost surely, 2^331252541452 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 331252541452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346546725840).

331252541452 is an abundant number, since it is smaller than the sum of its proper divisors (361840910228).

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

331252541452 is a wasteful number, since it uses less digits than its factorization.

331252541452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311471 (or 311462 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 331252541452 its reverse (254145252133), we get a palindrome (585397793585).

The spelling of 331252541452 in words is "three hundred thirty-one billion, two hundred fifty-two million, five hundred forty-one thousand, four hundred fifty-two".