312013343 has 2 divisors, whose sum is σ = 312013344. Its totient is φ = 312013342.

The previous prime is 312013337. The next prime is 312013363. The reversal of 312013343 is 343310213.

It is an a-pointer prime, because the next prime (312013363) can be obtained adding 312013343 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312013343 - 2¹⁸ = 311751199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312013313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156006671 + 156006672.

It is an arithmetic number, because the mean of its divisors is an integer number (156006672).

Almost surely, 2^312013343 is an apocalyptic number.

312013343 is a deficient number, since it is larger than the sum of its proper divisors (1).

312013343 is an equidigital number, since it uses as much as digits as its factorization.

312013343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 312013343 is about 17663.8994279293. The cubic root of 312013343 is about 678.2519570407.

Adding to 312013343 its reverse (343310213), we get a palindrome (655323556).

The spelling of 312013343 in words is "three hundred twelve million, thirteen thousand, three hundred forty-three".