1213404230140 has 96 divisors (see below), whose sum is σ = 2786388885504. Its totient is φ = 441866388480.

The previous prime is 1213404230081. The next prime is 1213404230149. The reversal of 1213404230140 is 410324043121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213404230149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23235699 + ... + 23287861.

It is an arithmetic number, because the mean of its divisors is an integer number (29024884224).

Almost surely, 2^{1213404230140} is an apocalyptic number.

1213404230140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213404230140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393194442752).

1213404230140 is an abundant number, since it is smaller than the sum of its proper divisors (1572984655364).

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

1213404230140 is a wasteful number, since it uses less digits than its factorization.

1213404230140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54427 (or 54425 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1213404230140 its reverse (410324043121), we get a palindrome (1623728273261).

The spelling of 1213404230140 in words is "one trillion, two hundred thirteen billion, four hundred four million, two hundred thirty thousand, one hundred forty".