314331643 has 2 divisors, whose sum is σ = 314331644. Its totient is φ = 314331642.

The previous prime is 314331637. The next prime is 314331671. The reversal of 314331643 is 346133413.

It is an a-pointer prime, because the next prime (314331671) can be obtained adding 314331643 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-314331643 is a prime.

It is a super-4 number, since 4×314331643⁴ (a number of 35 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (314331943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157165821 + 157165822.

It is an arithmetic number, because the mean of its divisors is an integer number (157165822).

Almost surely, 2^314331643 is an apocalyptic number.

314331643 is a deficient number, since it is larger than the sum of its proper divisors (1).

314331643 is an equidigital number, since it uses as much as digits as its factorization.

314331643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

The square root of 314331643 is about 17729.4005256805. The cubic root of 314331643 is about 679.9276472903.

The spelling of 314331643 in words is "three hundred fourteen million, three hundred thirty-one thousand, six hundred forty-three".