123311440213 has 8 divisors (see below), whose sum is σ = 132814499328. Its totient is φ = 113810890224.

The previous prime is 123311440177. The next prime is 123311440271. The reversal of 123311440213 is 312044113321.

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 123311440213 - 2²¹ = 123309343061 is a prime.

It is a super-2 number, since 2×123311440213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311440283) 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, 524581 + ... + 722362.

It is an arithmetic number, because the mean of its divisors is an integer number (16601812416).

Almost surely, 2^123311440213 is an apocalyptic number.

123311440213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123311440213 is a deficient number, since it is larger than the sum of its proper divisors (9503059115).

123311440213 is a wasteful number, since it uses less digits than its factorization.

123311440213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254563.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123311440213 its reverse (312044113321), we get a palindrome (435355553534).

The spelling of 123311440213 in words is "one hundred twenty-three billion, three hundred eleven million, four hundred forty thousand, two hundred thirteen".