201401312440 has 32 divisors (see below), whose sum is σ = 453184411680. Its totient is φ = 80554932352.

The previous prime is 201401312401. The next prime is 201401312473. The reversal of 201401312440 is 44213104102.

It is a happy number.

It is a congruent number.

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, 434877 + ... + 769363.

It is an arithmetic number, because the mean of its divisors is an integer number (14162012865).

Almost surely, 2^201401312440 is an apocalyptic number.

201401312440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201401312440 is an abundant number, since it is smaller than the sum of its proper divisors (251783099240).

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

201401312440 is a wasteful number, since it uses less digits than its factorization.

201401312440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349551 (or 349547 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 201401312440 its reverse (44213104102), we get a palindrome (245614416542).

The spelling of 201401312440 in words is "two hundred one billion, four hundred one million, three hundred twelve thousand, four hundred forty".