353403145309 has 2 divisors, whose sum is σ = 353403145310. Its totient is φ = 353403145308.

The previous prime is 353403145301. The next prime is 353403145349. The reversal of 353403145309 is 903541304353.

It is an a-pointer prime, because the next prime (353403145349) can be obtained adding 353403145309 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186757944025 + 166645201284 = 432155^2 + 408222^2 .

It is an emirp because it is prime and its reverse (903541304353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 353403145309 - 2³ = 353403145301 is a prime.

It is a super-2 number, since 2×353403145309² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353403145301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176701572654 + 176701572655.

It is an arithmetic number, because the mean of its divisors is an integer number (176701572655).

Almost surely, 2^353403145309 is an apocalyptic number.

It is an amenable number.

353403145309 is a deficient number, since it is larger than the sum of its proper divisors (1).

353403145309 is an equidigital number, since it uses as much as digits as its factorization.

353403145309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 353403145309 in words is "three hundred fifty-three billion, four hundred three million, one hundred forty-five thousand, three hundred nine".