123433311013 has 4 divisors (see below), whose sum is σ = 123620048908. Its totient is φ = 123246573120.

The previous prime is 123433310999. The next prime is 123433311019. The reversal of 123433311013 is 310113334321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78328896129 + 45104414884 = 279873^2 + 212378^2 .

It is a cyclic number.

It is not a de Polignac number, because 123433311013 - 2³³ = 114843376421 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 (123433311019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93367956 + ... + 93369277.

It is an arithmetic number, because the mean of its divisors is an integer number (30905012227).

Almost surely, 2^123433311013 is an apocalyptic number.

It is an amenable number.

123433311013 is a deficient number, since it is larger than the sum of its proper divisors (186737895).

123433311013 is an equidigital number, since it uses as much as digits as its factorization.

123433311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186737894.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 123433311013 its reverse (310113334321), we get a palindrome (433546645334).

The spelling of 123433311013 in words is "one hundred twenty-three billion, four hundred thirty-three million, three hundred eleven thousand, thirteen".