311853928505 has 8 divisors (see below), whose sum is σ = 427685387712. Its totient is φ = 213842693808.

The previous prime is 311853928493. The next prime is 311853928513. The reversal of 311853928505 is 505829358113.

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 311853928505 - 2⁸ = 311853928249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4455056087 + ... + 4455056156.

It is an arithmetic number, because the mean of its divisors is an integer number (53460673464).

Almost surely, 2^311853928505 is an apocalyptic number.

311853928505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

311853928505 is a deficient number, since it is larger than the sum of its proper divisors (115831459207).

311853928505 is an equidigital number, since it uses as much as digits as its factorization.

311853928505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8910112255.

The product of its (nonzero) digits is 1296000, while the sum is 50.

The spelling of 311853928505 in words is "three hundred eleven billion, eight hundred fifty-three million, nine hundred twenty-eight thousand, five hundred five".