123240211 has 8 divisors (see below), whose sum is σ = 125750880. Its totient is φ = 120736512.

The previous prime is 123240209. The next prime is 123240217. The reversal of 123240211 is 112042321.

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 123240211 - 2¹ = 123240209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123240217) 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, 47986 + ... + 50488.

It is an arithmetic number, because the mean of its divisors is an integer number (15718860).

Almost surely, 2^123240211 is an apocalyptic number.

123240211 is a deficient number, since it is larger than the sum of its proper divisors (2510669).

123240211 is an equidigital number, since it uses as much as digits as its factorization.

123240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485.

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

The square root of 123240211 is about 11101.3607724459. The cubic root of 123240211 is about 497.6425166811.

Adding to 123240211 its reverse (112042321), we get a palindrome (235282532).

The spelling of 123240211 in words is "one hundred twenty-three million, two hundred forty thousand, two hundred eleven".