311632401353344 has 16 divisors (see below), whose sum is σ = 620830174571370. Its totient is φ = 155816200676608.

The previous prime is 311632401353323. The next prime is 311632401353389. The reversal of 311632401353344 is 443353104236113.

It can be written as a sum of positive squares in only one way, i.e., 203798465640000 + 107833935713344 = 14275800^2 + 10384312^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×311632401353344² (a number of 30 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 311632401353344.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1217314067659 + ... + 1217314067914.

Almost surely, 2^{311632401353344} is an apocalyptic number.

It is an amenable number.

311632401353344 is a deficient number, since it is larger than the sum of its proper divisors (309197773218026).

311632401353344 is an equidigital number, since it uses as much as digits as its factorization.

311632401353344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434628135587 (or 2434628135575 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 311632401353344 its reverse (443353104236113), we get a palindrome (754985505589457).

The spelling of 311632401353344 in words is "three hundred eleven trillion, six hundred thirty-two billion, four hundred one million, three hundred fifty-three thousand, three hundred forty-four".