123012331013 has 16 divisors (see below), whose sum is σ = 144527945856. Its totient is φ = 103220015040.

The previous prime is 123012330997. The next prime is 123012331027. The reversal of 123012331013 is 310133210321.

It is a cyclic number.

It is not a de Polignac number, because 123012331013 - 2⁴ = 123012330997 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 (123012331913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3601331 + ... + 3635327.

It is an arithmetic number, because the mean of its divisors is an integer number (9032996616).

Almost surely, 2^123012331013 is an apocalyptic number.

123012331013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123012331013 is a deficient number, since it is larger than the sum of its proper divisors (21515614843).

123012331013 is a wasteful number, since it uses less digits than its factorization.

123012331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59324.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123012331013 its reverse (310133210321), we get a palindrome (433145541334).

The spelling of 123012331013 in words is "one hundred twenty-three billion, twelve million, three hundred thirty-one thousand, thirteen".