42211631 has 16 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 32762400.

The previous prime is 42211619. The next prime is 42211633. The reversal of 42211631 is 13611224.

It is not a de Polignac number, because 42211631 - 2²² = 38017327 is a prime.

It is a super-2 number, since 2×42211631² = 3563643583360322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42211633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21626 + ... + 23496.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^42211631 is an apocalyptic number.

42211631 is a deficient number, since it is larger than the sum of its proper divisors (10623697).

42211631 is a wasteful number, since it uses less digits than its factorization.

42211631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182.

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

The square root of 42211631 is about 6497.0478680705. The cubic root of 42211631 is about 348.1855239025.

Adding to 42211631 its reverse (13611224), we get a palindrome (55822855).

The spelling of 42211631 in words is "forty-two million, two hundred eleven thousand, six hundred thirty-one".