420212031 has 4 divisors (see below), whose sum is σ = 560282712. Its totient is φ = 280141352.

The previous prime is 420212027. The next prime is 420212053. The reversal of 420212031 is 130212024.

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 420212031 - 2² = 420212027 is a prime.

It is a super-2 number, since 2×420212031² = 353156301994289922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420212031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420212021) 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, 70035336 + ... + 70035341.

It is an arithmetic number, because the mean of its divisors is an integer number (140070678).

Almost surely, 2^420212031 is an apocalyptic number.

420212031 is a deficient number, since it is larger than the sum of its proper divisors (140070681).

420212031 is a wasteful number, since it uses less digits than its factorization.

420212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140070680.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 420212031 is about 20499.0739059110. The cubic root of 420212031 is about 749.0132391957.

Adding to 420212031 its reverse (130212024), we get a palindrome (550424055).

The spelling of 420212031 in words is "four hundred twenty million, two hundred twelve thousand, thirty-one".