123131330213 has 4 divisors (see below), whose sum is σ = 129611926560. Its totient is φ = 116650733868.

The previous prime is 123131330143. The next prime is 123131330219. The reversal of 123131330213 is 312033131321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312033131321 = 29 ⋅10759763149.

It is a cyclic number.

It is not a de Polignac number, because 123131330213 - 2¹² = 123131326117 is a prime.

It is a super-2 number, since 2×123131330213² (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 (123131330219) 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, 3240298145 + ... + 3240298182.

It is an arithmetic number, because the mean of its divisors is an integer number (32402981640).

Almost surely, 2^123131330213 is an apocalyptic number.

It is an amenable number.

123131330213 is a deficient number, since it is larger than the sum of its proper divisors (6480596347).

123131330213 is an equidigital number, since it uses as much as digits as its factorization.

123131330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480596346.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123131330213 its reverse (312033131321), we get a palindrome (435164461534).

The spelling of 123131330213 in words is "one hundred twenty-three billion, one hundred thirty-one million, three hundred thirty thousand, two hundred thirteen".