420420031211 has 4 divisors (see below), whose sum is σ = 420439048512. Its totient is φ = 420401013912.

The previous prime is 420420031189. The next prime is 420420031249. The reversal of 420420031211 is 112130024024.

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

It is a cyclic number.

It is not a de Polignac number, because 420420031211 - 2³⁰ = 419346289387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420420031271) 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, 9475451 + ... + 9519716.

It is an arithmetic number, because the mean of its divisors is an integer number (105109762128).

Almost surely, 2^420420031211 is an apocalyptic number.

420420031211 is a deficient number, since it is larger than the sum of its proper divisors (19017301).

420420031211 is a wasteful number, since it uses less digits than its factorization.

420420031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19017300.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 420420031211 its reverse (112130024024), we get a palindrome (532550055235).

The spelling of 420420031211 in words is "four hundred twenty billion, four hundred twenty million, thirty-one thousand, two hundred eleven".