123112521313 has 8 divisors (see below), whose sum is σ = 126104587488. Its totient is φ = 120126318144.

The previous prime is 123112521293. The next prime is 123112521319. The reversal of 123112521313 is 313125211321.

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 123112521313 - 2²¹ = 123110424161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123112521319) 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, 1423231 + ... + 1507252.

It is an arithmetic number, because the mean of its divisors is an integer number (15763073436).

Almost surely, 2^123112521313 is an apocalyptic number.

It is an amenable number.

123112521313 is a deficient number, since it is larger than the sum of its proper divisors (2992066175).

123112521313 is an equidigital number, since it uses as much as digits as its factorization.

123112521313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931503.

The product of its digits is 1080, while the sum is 25.

Adding to 123112521313 its reverse (313125211321), we get a palindrome (436237732634).

The spelling of 123112521313 in words is "one hundred twenty-three billion, one hundred twelve million, five hundred twenty-one thousand, three hundred thirteen".