401531301216 has 36 divisors (see below), whose sum is σ = 1141854638652. Its totient is φ = 133843766976.

The previous prime is 401531301209. The next prime is 401531301329. The reversal of 401531301216 is 612103135104.

It is a happy number.

401531301216 is a `hidden beast` number, since 4 + 0 + 1 + 531 + 3 + 0 + 121 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×401531301216² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401531301216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697102666 + ... + 697103241.

It is an arithmetic number, because the mean of its divisors is an integer number (31718184407).

Almost surely, 2^401531301216 is an apocalyptic number.

It is an amenable number.

401531301216 is an abundant number, since it is smaller than the sum of its proper divisors (740323337436).

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

401531301216 is a wasteful number, since it uses less digits than its factorization.

401531301216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394205923 (or 1394205912 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 401531301216 in words is "four hundred one billion, five hundred thirty-one million, three hundred one thousand, two hundred sixteen".