420343311 has 4 divisors (see below), whose sum is σ = 560457752. Its totient is φ = 280228872.

The previous prime is 420343303. The next prime is 420343387. The reversal of 420343311 is 113343024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 420343311 - 2³ = 420343303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420344311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70057216 + ... + 70057221.

It is an arithmetic number, because the mean of its divisors is an integer number (140114438).

Almost surely, 2^420343311 is an apocalyptic number.

420343311 is a deficient number, since it is larger than the sum of its proper divisors (140114441).

420343311 is a wasteful number, since it uses less digits than its factorization.

420343311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140114440.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 420343311 is about 20502.2757517306. The cubic root of 420343311 is about 749.0912317429.

Adding to 420343311 its reverse (113343024), we get a palindrome (533686335).

The spelling of 420343311 in words is "four hundred twenty million, three hundred forty-three thousand, three hundred eleven".