211742275 has 6 divisors (see below), whose sum is σ = 262560452. Its totient is φ = 169393800.

The previous prime is 211742273. The next prime is 211742281. The reversal of 211742275 is 572247112.

It is not a de Polignac number, because 211742275 - 2¹ = 211742273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211742273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4234821 + ... + 4234870.

Almost surely, 2^211742275 is an apocalyptic number.

211742275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

211742275 is a deficient number, since it is larger than the sum of its proper divisors (50818177).

211742275 is an equidigital number, since it uses as much as digits as its factorization.

211742275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469701 (or 8469696 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 211742275 is about 14551.3667742931. The cubic root of 211742275 is about 596.0314712073.

Adding to 211742275 its reverse (572247112), we get a palindrome (783989387).

The spelling of 211742275 in words is "two hundred eleven million, seven hundred forty-two thousand, two hundred seventy-five".