311241893 has 2 divisors, whose sum is σ = 311241894. Its totient is φ = 311241892.

The previous prime is 311241883. The next prime is 311241901. The reversal of 311241893 is 398142113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273505444 + 37736449 = 16538^2 + 6143^2 .

It is a cyclic number.

It is not a de Polignac number, because 311241893 - 2¹⁸ = 310979749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311241883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155620946 + 155620947.

It is an arithmetic number, because the mean of its divisors is an integer number (155620947).

Almost surely, 2^311241893 is an apocalyptic number.

It is an amenable number.

311241893 is a deficient number, since it is larger than the sum of its proper divisors (1).

311241893 is an equidigital number, since it uses as much as digits as its factorization.

311241893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 311241893 is about 17642.0490023126. The cubic root of 311241893 is about 677.6925052197.

The spelling of 311241893 in words is "three hundred eleven million, two hundred forty-one thousand, eight hundred ninety-three".