123111313133 has 8 divisors (see below), whose sum is σ = 130722433848. Its totient is φ = 115541223424.

The previous prime is 123111313123. The next prime is 123111313151. The reversal of 123111313133 is 331313111321.

It can be written as a sum of positive squares in 4 ways, for example, as 1562858089 + 121548455044 = 39533^2 + 348638^2 .

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 123111313133 - 2¹⁸ = 123111050989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123111313099 and 123111313108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111313103) 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, 10251566 + ... + 10263567.

It is an arithmetic number, because the mean of its divisors is an integer number (16340304231).

Almost surely, 2^123111313133 is an apocalyptic number.

It is an amenable number.

123111313133 is a deficient number, since it is larger than the sum of its proper divisors (7611120715).

123111313133 is a wasteful number, since it uses less digits than its factorization.

123111313133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20515503.

The product of its digits is 486, while the sum is 23.

Adding to 123111313133 its reverse (331313111321), we get a palindrome (454424424454).

The spelling of 123111313133 in words is "one hundred twenty-three billion, one hundred eleven million, three hundred thirteen thousand, one hundred thirty-three".