42311471 has 2 divisors, whose sum is σ = 42311472. Its totient is φ = 42311470.

The previous prime is 42311449. The next prime is 42311519. The reversal of 42311471 is 17411324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42311471 - 2⁶ = 42311407 is a prime.

It is a super-3 number, since 3×42311471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42311411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155735 + 21155736.

It is an arithmetic number, because the mean of its divisors is an integer number (21155736).

Almost surely, 2^42311471 is an apocalyptic number.

42311471 is a deficient number, since it is larger than the sum of its proper divisors (1).

42311471 is an equidigital number, since it uses as much as digits as its factorization.

42311471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 42311471 is about 6504.7268197827. The cubic root of 42311471 is about 348.4598201136.

Adding to 42311471 its reverse (17411324), we get a palindrome (59722795).

The spelling of 42311471 in words is "forty-two million, three hundred eleven thousand, four hundred seventy-one".