34311421 has 2 divisors, whose sum is σ = 34311422. Its totient is φ = 34311420.

The previous prime is 34311413. The next prime is 34311427. The reversal of 34311421 is 12411343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34047225 + 264196 = 5835^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 34311421 - 2³ = 34311413 is a prime.

It is a super-2 number, since 2×34311421² = 2354547222078482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34311427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17155710 + 17155711.

It is an arithmetic number, because the mean of its divisors is an integer number (17155711).

Almost surely, 2^34311421 is an apocalyptic number.

It is an amenable number.

34311421 is a deficient number, since it is larger than the sum of its proper divisors (1).

34311421 is an equidigital number, since it uses as much as digits as its factorization.

34311421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 34311421 is about 5857.5951550103. The cubic root of 34311421 is about 324.9472766545.

Adding to 34311421 its reverse (12411343), we get a palindrome (46722764).

The spelling of 34311421 in words is "thirty-four million, three hundred eleven thousand, four hundred twenty-one".