123111442331 has 8 divisors (see below), whose sum is σ = 123600331920. Its totient is φ = 122623345152.

The previous prime is 123111442313. The next prime is 123111442369. The reversal of 123111442331 is 133244111321.

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 123111442331 - 2¹⁴ = 123111425947 is a prime.

It is a super-2 number, since 2×123111442331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123111442331.

It is not an unprimeable number, because it can be changed into a prime (123111441331) 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, 114215 + ... + 509183.

It is an arithmetic number, because the mean of its divisors is an integer number (15450041490).

Almost surely, 2^123111442331 is an apocalyptic number.

123111442331 is a deficient number, since it is larger than the sum of its proper divisors (488889589).

123111442331 is an equidigital number, since it uses as much as digits as its factorization.

123111442331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396205.

The product of its digits is 1728, while the sum is 26.

Adding to 123111442331 its reverse (133244111321), we get a palindrome (256355553652).

The spelling of 123111442331 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred forty-two thousand, three hundred thirty-one".