311938441 has 2 divisors, whose sum is σ = 311938442. Its totient is φ = 311938440.

The previous prime is 311938387. The next prime is 311938463. The reversal of 311938441 is 144839113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163098441 + 148840000 = 12771^2 + 12200^2 .

It is an emirp because it is prime and its reverse (144839113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311938441 - 2¹³ = 311930249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311938397 and 311938406.

It is not a weakly prime, because it can be changed into another prime (311938481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155969220 + 155969221.

It is an arithmetic number, because the mean of its divisors is an integer number (155969221).

Almost surely, 2^311938441 is an apocalyptic number.

It is an amenable number.

311938441 is a deficient number, since it is larger than the sum of its proper divisors (1).

311938441 is an equidigital number, since it uses as much as digits as its factorization.

311938441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 311938441 is about 17661.7791006456. The cubic root of 311938441 is about 678.1976789198.

The spelling of 311938441 in words is "three hundred eleven million, nine hundred thirty-eight thousand, four hundred forty-one".