123011313420 has 24 divisors (see below), whose sum is σ = 344431677744. Its totient is φ = 32803016896.

The previous prime is 123011313419. The next prime is 123011313431. The reversal of 123011313420 is 24313110321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025094219 + ... + 1025094338.

It is an arithmetic number, because the mean of its divisors is an integer number (14351319906).

Almost surely, 2^123011313420 is an apocalyptic number.

123011313420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123011313420 is an abundant number, since it is smaller than the sum of its proper divisors (221420364324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123011313420 is a wasteful number, since it uses less digits than its factorization.

123011313420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050188569 (or 2050188567 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123011313420 its reverse (24313110321), we get a palindrome (147324423741).

The spelling of 123011313420 in words is "one hundred twenty-three billion, eleven million, three hundred thirteen thousand, four hundred twenty".