1231230412140 has 24 divisors (see below), whose sum is σ = 3447445154160. Its totient is φ = 328328109888.

The previous prime is 1231230412123. The next prime is 1231230412169. The reversal of 1231230412140 is 412140321321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231230412140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10260253375 + ... + 10260253494.

It is an arithmetic number, because the mean of its divisors is an integer number (143643548090).

Almost surely, 2^{1231230412140} is an apocalyptic number.

1231230412140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231230412140 is an abundant number, since it is smaller than the sum of its proper divisors (2216214742020).

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

1231230412140 is a wasteful number, since it uses less digits than its factorization.

1231230412140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520506881 (or 20520506879 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1231230412140 its reverse (412140321321), we get a palindrome (1643370733461).

The spelling of 1231230412140 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, four hundred twelve thousand, one hundred forty".