401311231320244 has 96 divisors (see below), whose sum is σ = 843251834880000. Its totient is φ = 163387085558400.

The previous prime is 401311231320239. The next prime is 401311231320271. The reversal of 401311231320244 is 442023132113104.

It is a happy number.

It is a super-2 number, since 2×401311231320244² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441909357 + ... + 442816555.

It is an arithmetic number, because the mean of its divisors is an integer number (8783873280000).

Almost surely, 2^{401311231320244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401311231320244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421625917440000).

401311231320244 is an abundant number, since it is smaller than the sum of its proper divisors (441940603559756).

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

401311231320244 is a wasteful number, since it uses less digits than its factorization.

401311231320244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911933 (or 911931 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 401311231320244 its reverse (442023132113104), we get a palindrome (843334363433348).

The spelling of 401311231320244 in words is "four hundred one trillion, three hundred eleven billion, two hundred thirty-one million, three hundred twenty thousand, two hundred forty-four".