350143309 has 2 divisors, whose sum is σ = 350143310. Its totient is φ = 350143308.

The previous prime is 350143307. The next prime is 350143331. The reversal of 350143309 is 903341053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348755625 + 1387684 = 18675^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 350143309 - 2¹ = 350143307 is a prime.

Together with 350143307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350143307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175071654 + 175071655.

It is an arithmetic number, because the mean of its divisors is an integer number (175071655).

Almost surely, 2^350143309 is an apocalyptic number.

It is an amenable number.

350143309 is a deficient number, since it is larger than the sum of its proper divisors (1).

350143309 is an equidigital number, since it uses as much as digits as its factorization.

350143309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 350143309 is about 18712.1166360196. The cubic root of 350143309 is about 704.8260449707.

The spelling of 350143309 in words is "three hundred fifty million, one hundred forty-three thousand, three hundred nine".