331222324340 has 24 divisors (see below), whose sum is σ = 719551947240. Its totient is φ = 127920345728.

The previous prime is 331222324273. The next prime is 331222324403. The reversal of 331222324340 is 43423222133.

It can be written as a sum of positive squares in 4 ways, for example, as 86527204 + 331135797136 = 9302^2 + 575444^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285535907 + ... + 285537066.

It is an arithmetic number, because the mean of its divisors is an integer number (29981331135).

Almost surely, 2^331222324340 is an apocalyptic number.

It is an amenable number.

331222324340 is an abundant number, since it is smaller than the sum of its proper divisors (388329622900).

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

331222324340 is a wasteful number, since it uses less digits than its factorization.

331222324340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571073011 (or 571073009 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 331222324340 its reverse (43423222133), we get a palindrome (374645546473).

The spelling of 331222324340 in words is "three hundred thirty-one billion, two hundred twenty-two million, three hundred twenty-four thousand, three hundred forty".