1234012161320 has 128 divisors (see below), whose sum is σ = 2887204003200. Its totient is φ = 474320157696.

The previous prime is 1234012161311. The next prime is 1234012161377. The reversal of 1234012161320 is 231612104321.

It is a happy number.

It is a Cunningham number, because it is equal to 1110861²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 1234012161320.

It is an unprimeable number.

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, 95527502 + ... + 95540418.

It is an arithmetic number, because the mean of its divisors is an integer number (22556281275).

Almost surely, 2^{1234012161320} is an apocalyptic number.

1234012161320 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 1234012161320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443602001600).

1234012161320 is an abundant number, since it is smaller than the sum of its proper divisors (1653191841880).

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

1234012161320 is a wasteful number, since it uses less digits than its factorization.

1234012161320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867 (or 13863 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1234012161320 its reverse (231612104321), we get a palindrome (1465624265641).

The spelling of 1234012161320 in words is "one trillion, two hundred thirty-four billion, twelve million, one hundred sixty-one thousand, three hundred twenty".