42031221311 has 24 divisors (see below), whose sum is σ = 46312937424. Its totient is φ = 38010954240.

The previous prime is 42031221307. The next prime is 42031221313. The reversal of 42031221311 is 11312213024.

It is not a de Polignac number, because 42031221311 - 2² = 42031221307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031221313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3009701 + ... + 3023633.

It is an arithmetic number, because the mean of its divisors is an integer number (1929705726).

Almost surely, 2^42031221311 is an apocalyptic number.

42031221311 is a deficient number, since it is larger than the sum of its proper divisors (4281716113).

42031221311 is a wasteful number, since it uses less digits than its factorization.

42031221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14219 (or 14190 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 42031221311 its reverse (11312213024), we get a palindrome (53343434335).

The spelling of 42031221311 in words is "forty-two billion, thirty-one million, two hundred twenty-one thousand, three hundred eleven".