311257100556223 has 2 divisors, whose sum is σ = 311257100556224. Its totient is φ = 311257100556222.

The previous prime is 311257100556221. The next prime is 311257100556271. The reversal of 311257100556223 is 322655001752113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311257100556223 - 2¹ = 311257100556221 is a prime.

Together with 311257100556221, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 311257100556223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311257100556221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155628550278111 + 155628550278112.

It is an arithmetic number, because the mean of its divisors is an integer number (155628550278112).

Almost surely, 2^{311257100556223} is an apocalyptic number.

311257100556223 is a deficient number, since it is larger than the sum of its proper divisors (1).

311257100556223 is an equidigital number, since it uses as much as digits as its factorization.

311257100556223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 311257100556223 in words is "three hundred eleven trillion, two hundred fifty-seven billion, one hundred million, five hundred fifty-six thousand, two hundred twenty-three".