123201321311 has 8 divisors (see below), whose sum is σ = 129738218880. Its totient is φ = 116669685528.

The previous prime is 123201321289. The next prime is 123201321329. The reversal of 123201321311 is 113123102321.

It is a happy number.

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 123201321311 - 2²² = 123197127007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201321361) 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, 1267331 + ... + 1361076.

It is an arithmetic number, because the mean of its divisors is an integer number (16217277360).

Almost surely, 2^123201321311 is an apocalyptic number.

123201321311 is a deficient number, since it is larger than the sum of its proper divisors (6536897569).

123201321311 is a wasteful number, since it uses less digits than its factorization.

123201321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630893.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123201321311 its reverse (113123102321), we get a palindrome (236324423632).

The spelling of 123201321311 in words is "one hundred twenty-three billion, two hundred one million, three hundred twenty-one thousand, three hundred eleven".