349215253 has 2 divisors, whose sum is σ = 349215254. Its totient is φ = 349215252.

The previous prime is 349215227. The next prime is 349215259. The reversal of 349215253 is 352512943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287404209 + 61811044 = 16953^2 + 7862^2 .

It is a cyclic number.

It is not a de Polignac number, because 349215253 - 2⁵ = 349215221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349215259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174607626 + 174607627.

It is an arithmetic number, because the mean of its divisors is an integer number (174607627).

Almost surely, 2^349215253 is an apocalyptic number.

It is an amenable number.

349215253 is a deficient number, since it is larger than the sum of its proper divisors (1).

349215253 is an equidigital number, since it uses as much as digits as its factorization.

349215253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 349215253 is about 18687.3019186826. The cubic root of 349215253 is about 704.2027794013.

The spelling of 349215253 in words is "three hundred forty-nine million, two hundred fifteen thousand, two hundred fifty-three".