311225421440513 has 8 divisors (see below), whose sum is σ = 325801196113536. Its totient is φ = 296736666318400.

The previous prime is 311225421440503. The next prime is 311225421440551. The reversal of 311225421440513 is 315044124522113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311225421440513 - 2⁸ = 311225421440257 is a prime.

It is a super-2 number, since 2×311225421440513² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311225421440503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21754880408 + ... + 21754894713.

It is an arithmetic number, because the mean of its divisors is an integer number (40725149514192).

Almost surely, 2^{311225421440513} is an apocalyptic number.

It is an amenable number.

311225421440513 is a deficient number, since it is larger than the sum of its proper divisors (14575774673023).

311225421440513 is a wasteful number, since it uses less digits than its factorization.

311225421440513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43509775455.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 311225421440513 its reverse (315044124522113), we get a palindrome (626269545962626).

The spelling of 311225421440513 in words is "three hundred eleven trillion, two hundred twenty-five billion, four hundred twenty-one million, four hundred forty thousand, five hundred thirteen".