123232021311 has 8 divisors (see below), whose sum is σ = 187782127744. Its totient is φ = 70418297880.

The previous prime is 123232021309. The next prime is 123232021433. The reversal of 123232021311 is 113120232321.

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

It is not a de Polignac number, because 123232021311 - 2¹ = 123232021309 is a prime.

It is a super-2 number, since 2×123232021311² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5868191491 = 123232021311 / (1 + 2 + 3 + 2 + 3 + 2 + 0 + 2 + 1 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123232021301) 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, 2934095725 + ... + 2934095766.

It is an arithmetic number, because the mean of its divisors is an integer number (23472765968).

Almost surely, 2^123232021311 is an apocalyptic number.

123232021311 is a deficient number, since it is larger than the sum of its proper divisors (64550106433).

123232021311 is an equidigital number, since it uses as much as digits as its factorization.

123232021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868191501.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123232021311 its reverse (113120232321), we get a palindrome (236352253632).

The spelling of 123232021311 in words is "one hundred twenty-three billion, two hundred thirty-two million, twenty-one thousand, three hundred eleven".