311653443616445 has 32 divisors (see below), whose sum is σ = 427728380461056. Its totient is φ = 213546292948800.

The previous prime is 311653443616421. The next prime is 311653443616447. The reversal of 311653443616445 is 544616344356113.

It is not a de Polignac number, because 311653443616445 - 2¹⁸ = 311653443354301 is a prime.

It is a super-4 number, since 4×311653443616445⁴ (a number of 59 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311653443616447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325522400 + ... + 326478390.

It is an arithmetic number, because the mean of its divisors is an integer number (13366511889408).

Almost surely, 2^{311653443616445} is an apocalyptic number.

311653443616445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

311653443616445 is a deficient number, since it is larger than the sum of its proper divisors (116074936844611).

311653443616445 is a wasteful number, since it uses less digits than its factorization.

311653443616445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962921.

The product of its digits is 37324800, while the sum is 56.

The spelling of 311653443616445 in words is "three hundred eleven trillion, six hundred fifty-three billion, four hundred forty-three million, six hundred sixteen thousand, four hundred forty-five".