42312211 has 2 divisors, whose sum is σ = 42312212. Its totient is φ = 42312210.

The previous prime is 42312169. The next prime is 42312217. The reversal of 42312211 is 11221324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42312211 - 2¹⁹ = 41787923 is a prime.

It is not a weakly prime, because it can be changed into another prime (42312217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21156105 + 21156106.

It is an arithmetic number, because the mean of its divisors is an integer number (21156106).

Almost surely, 2^42312211 is an apocalyptic number.

42312211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42312211 is an equidigital number, since it uses as much as digits as its factorization.

42312211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 16.

The square root of 42312211 is about 6504.7837012463. The cubic root of 42312211 is about 348.4618515467.

Adding to 42312211 its reverse (11221324), we get a palindrome (53533535).

The spelling of 42312211 in words is "forty-two million, three hundred twelve thousand, two hundred eleven".