42213311 has 4 divisors (see below), whose sum is σ = 48243792. Its totient is φ = 36182832.

The previous prime is 42213277. The next prime is 42213317. The reversal of 42213311 is 11331224.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-42213311 is a prime.

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 42213311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42213317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3015230 + ... + 3015243.

It is an arithmetic number, because the mean of its divisors is an integer number (12060948).

Almost surely, 2^42213311 is an apocalyptic number.

42213311 is a deficient number, since it is larger than the sum of its proper divisors (6030481).

42213311 is an equidigital number, since it uses as much as digits as its factorization.

42213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030480.

The product of its digits is 144, while the sum is 17.

The square root of 42213311 is about 6497.1771562733. The cubic root of 42213311 is about 348.1901430395.

Adding to 42213311 its reverse (11331224), we get a palindrome (53544535).

It can be divided in two parts, 42213 and 311, that added together give a palindrome (42524).

The spelling of 42213311 in words is "forty-two million, two hundred thirteen thousand, three hundred eleven".