32440420331 has 16 divisors (see below), whose sum is σ = 35808000480. Its totient is φ = 29143495680.

The previous prime is 32440420319. The next prime is 32440420339. The reversal of 32440420331 is 13302404423.

It is a cyclic number.

It is not a de Polignac number, because 32440420331 - 2¹⁰ = 32440419307 is a prime.

It is a super-2 number, since 2×32440420331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32440420331.

It is not an unprimeable number, because it can be changed into a prime (32440420339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699905 + ... + 744813.

It is an arithmetic number, because the mean of its divisors is an integer number (2238000030).

Almost surely, 2^32440420331 is an apocalyptic number.

32440420331 is a deficient number, since it is larger than the sum of its proper divisors (3367580149).

32440420331 is a wasteful number, since it uses less digits than its factorization.

32440420331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45694.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 32440420331 its reverse (13302404423), we get a palindrome (45742824754).

The spelling of 32440420331 in words is "thirty-two billion, four hundred forty million, four hundred twenty thousand, three hundred thirty-one".