1401343251312 has 80 divisors (see below), whose sum is σ = 3698074165248. Its totient is φ = 457104011520.

The previous prime is 1401343251311. The next prime is 1401343251361. The reversal of 1401343251312 is 2131523431041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401343251312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401343251311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255237 + ... + 1693467.

Almost surely, 2^{1401343251312} is an apocalyptic number.

1401343251312 is a gapful number since it is divisible by the number (12) 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 1401343251312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849037082624).

1401343251312 is an abundant number, since it is smaller than the sum of its proper divisors (2296730913936).

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

1401343251312 is a wasteful number, since it uses less digits than its factorization.

1401343251312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438678 (or 1438672 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1401343251312 its reverse (2131523431041), we get a palindrome (3532866682353).

The spelling of 1401343251312 in words is "one trillion, four hundred one billion, three hundred forty-three million, two hundred fifty-one thousand, three hundred twelve".