311970853 has 2 divisors, whose sum is σ = 311970854. Its totient is φ = 311970852.

The previous prime is 311970851. The next prime is 311970877. The reversal of 311970853 is 358079113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168402529 + 143568324 = 12977^2 + 11982^2 .

It is a cyclic number.

It is not a de Polignac number, because 311970853 - 2¹ = 311970851 is a prime.

Together with 311970851, it forms a pair of twin primes.

It is equal to p_16865164 and since 311970853 and 16865164 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311970851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155985426 + 155985427.

It is an arithmetic number, because the mean of its divisors is an integer number (155985427).

Almost surely, 2^311970853 is an apocalyptic number.

It is an amenable number.

311970853 is a deficient number, since it is larger than the sum of its proper divisors (1).

311970853 is an equidigital number, since it uses as much as digits as its factorization.

311970853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 311970853 is about 17662.6966514176. The cubic root of 311970853 is about 678.2211675092.

The spelling of 311970853 in words is "three hundred eleven million, nine hundred seventy thousand, eight hundred fifty-three".