123135340000 has 60 divisors (see below), whose sum is σ = 302931455904. Its totient is φ = 49254128000.

The previous prime is 123135339961. The next prime is 123135340001. The reversal of 123135340000 is 43531321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123135340001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3058384 + ... + 3098383.

Almost surely, 2^123135340000 is an apocalyptic number.

123135340000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123135340000 is an abundant number, since it is smaller than the sum of its proper divisors (179796115904).

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

123135340000 is an frugal number, since it uses more digits than its factorization.

123135340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156797 (or 6156774 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 123135340000 its reverse (43531321), we get a palindrome (123178871321).

The spelling of 123135340000 in words is "one hundred twenty-three billion, one hundred thirty-five million, three hundred forty thousand".