210420431 has 8 divisors (see below), whose sum is σ = 227150784. Its totient is φ = 193767840.

The previous prime is 210420403. The next prime is 210420461. The reversal of 210420431 is 134024012.

210420431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210420431 - 2⁶ = 210420367 is a prime.

It is a super-2 number, since 2×210420431² = 88553515564451522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210420461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13751 + ... + 24696.

It is an arithmetic number, because the mean of its divisors is an integer number (28393848).

Almost surely, 2^210420431 is an apocalyptic number.

210420431 is a deficient number, since it is larger than the sum of its proper divisors (16730353).

210420431 is a wasteful number, since it uses less digits than its factorization.

210420431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 210420431 is about 14505.8757405405. The cubic root of 210420431 is about 594.7885989568.

Adding to 210420431 its reverse (134024012), we get a palindrome (344444443).

The spelling of 210420431 in words is "two hundred ten million, four hundred twenty thousand, four hundred thirty-one".