220123311 has 8 divisors (see below), whose sum is σ = 303618480. Its totient is φ = 141688512.

The previous prime is 220123283. The next prime is 220123333. The reversal of 220123311 is 113321022.

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

It is not a de Polignac number, because 220123311 - 2⁶ = 220123247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123381) 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, 1264990 + ... + 1265163.

It is an arithmetic number, because the mean of its divisors is an integer number (37952310).

Almost surely, 2^220123311 is an apocalyptic number.

220123311 is a deficient number, since it is larger than the sum of its proper divisors (83495169).

220123311 is a wasteful number, since it uses less digits than its factorization.

220123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530185.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220123311 is about 14836.5532048384. The cubic root of 220123311 is about 603.7938412754.

Adding to 220123311 its reverse (113321022), we get a palindrome (333444333).

The spelling of 220123311 in words is "two hundred twenty million, one hundred twenty-three thousand, three hundred eleven".