421343311 has 2 divisors, whose sum is σ = 421343312. Its totient is φ = 421343310.

The previous prime is 421343281. The next prime is 421343327. The reversal of 421343311 is 113343124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421343311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421343341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210671655 + 210671656.

It is an arithmetic number, because the mean of its divisors is an integer number (210671656).

Almost surely, 2^421343311 is an apocalyptic number.

421343311 is a deficient number, since it is larger than the sum of its proper divisors (1).

421343311 is an equidigital number, since it uses as much as digits as its factorization.

421343311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 421343311 is about 20526.6488010099. The cubic root of 421343311 is about 749.6847925813.

Adding to 421343311 its reverse (113343124), we get a palindrome (534686435).

It can be divided in two parts, 4213 and 43311, that added together give a square (47524 = 218²).

The spelling of 421343311 in words is "four hundred twenty-one million, three hundred forty-three thousand, three hundred eleven".