311013343 has 2 divisors, whose sum is σ = 311013344. Its totient is φ = 311013342.

The previous prime is 311013301. The next prime is 311013349. The reversal of 311013343 is 343310113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311013343 - 2¹³ = 311005151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311013343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311013349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155506671 + 155506672.

It is an arithmetic number, because the mean of its divisors is an integer number (155506672).

Almost surely, 2^311013343 is an apocalyptic number.

311013343 is a deficient number, since it is larger than the sum of its proper divisors (1).

311013343 is an equidigital number, since it uses as much as digits as its factorization.

311013343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 311013343 is about 17635.5703905488. The cubic root of 311013343 is about 677.5265843792.

Adding to 311013343 its reverse (343310113), we get a palindrome (654323456).

The spelling of 311013343 in words is "three hundred eleven million, thirteen thousand, three hundred forty-three".