331040020605 has 32 divisors (see below), whose sum is σ = 606271862784. Its totient is φ = 151097196096.

The previous prime is 331040020603. The next prime is 331040020687. The reversal of 331040020605 is 506020040133.

It is a happy number.

It is not a de Polignac number, because 331040020605 - 2¹ = 331040020603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331040020603) 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, 2384089 + ... + 2519118.

It is an arithmetic number, because the mean of its divisors is an integer number (18945995712).

Almost surely, 2^331040020605 is an apocalyptic number.

331040020605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

331040020605 is a deficient number, since it is larger than the sum of its proper divisors (275231842179).

331040020605 is a wasteful number, since it uses less digits than its factorization.

331040020605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903865.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 331040020605 its reverse (506020040133), we get a palindrome (837060060738).

The spelling of 331040020605 in words is "three hundred thirty-one billion, forty million, twenty thousand, six hundred five".