210311242 has 8 divisors (see below), whose sum is σ = 315532800. Its totient is φ = 105133644.

The previous prime is 210311141. The next prime is 210311251. The reversal of 210311242 is 242113012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6609 + ... + 21547.

It is an arithmetic number, because the mean of its divisors is an integer number (39441600).

Almost surely, 2^210311242 is an apocalyptic number.

210311242 is a deficient number, since it is larger than the sum of its proper divisors (105221558).

210311242 is a wasteful number, since it uses less digits than its factorization.

210311242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21980.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 210311242 is about 14502.1116393441. Note that the first 3 decimals coincide. The cubic root of 210311242 is about 594.6857008231.

Adding to 210311242 its reverse (242113012), we get a palindrome (452424254).

The spelling of 210311242 in words is "two hundred ten million, three hundred eleven thousand, two hundred forty-two".