123311533213 has 8 divisors (see below), whose sum is σ = 135273192480. Its totient is φ = 111475127280.

The previous prime is 123311533201. The next prime is 123311533223. The reversal of 123311533213 is 312335113321.

It is a happy number.

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

It is not a de Polignac number, because 123311533213 - 2¹⁷ = 123311402141 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 (123311533223) 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, 31311270 + ... + 31315207.

It is an arithmetic number, because the mean of its divisors is an integer number (16909149060).

Almost surely, 2^123311533213 is an apocalyptic number.

It is an amenable number.

123311533213 is a deficient number, since it is larger than the sum of its proper divisors (11961659267).

123311533213 is a wasteful number, since it uses less digits than its factorization.

123311533213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62626667.

The product of its digits is 4860, while the sum is 28.

Adding to 123311533213 its reverse (312335113321), we get a palindrome (435646646534).

The spelling of 123311533213 in words is "one hundred twenty-three billion, three hundred eleven million, five hundred thirty-three thousand, two hundred thirteen".