1312155423400 has 96 divisors (see below), whose sum is σ = 3186181785600. Its totient is φ = 501603872000.

The previous prime is 1312155423349. The next prime is 1312155423413. The reversal of 1312155423400 is 43245512131.

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 23 ways as a sum of consecutive naturals, for example, 5170686 + ... + 5418514.

It is an arithmetic number, because the mean of its divisors is an integer number (33189393600).

Almost surely, 2^{1312155423400} is an apocalyptic number.

1312155423400 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 1312155423400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593090892800).

1312155423400 is an abundant number, since it is smaller than the sum of its proper divisors (1874026362200).

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

1312155423400 is a wasteful number, since it uses less digits than its factorization.

1312155423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249019 (or 249010 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 1312155423400 in words is "one trillion, three hundred twelve billion, one hundred fifty-five million, four hundred twenty-three thousand, four hundred".