42311719 has 2 divisors, whose sum is σ = 42311720. Its totient is φ = 42311718.

The previous prime is 42311693. The next prime is 42311723. The reversal of 42311719 is 91711324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42311719 - 2⁹ = 42311207 is a prime.

It is a super-2 number, since 2×42311719² = 3580563129469922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42311779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155859 + 21155860.

It is an arithmetic number, because the mean of its divisors is an integer number (21155860).

Almost surely, 2^42311719 is an apocalyptic number.

42311719 is a deficient number, since it is larger than the sum of its proper divisors (1).

42311719 is an equidigital number, since it uses as much as digits as its factorization.

42311719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 42311719 is about 6504.7458828151. The cubic root of 42311719 is about 348.4605009209.

The spelling of 42311719 in words is "forty-two million, three hundred eleven thousand, seven hundred nineteen".