349234813 has 2 divisors, whose sum is σ = 349234814. Its totient is φ = 349234812.

The previous prime is 349234799. The next prime is 349234883. The reversal of 349234813 is 318432943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348456889 + 777924 = 18667^2 + 882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349234813 is a prime.

It is a super-2 number, since 2×349234813² = 243929909222289938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349234883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174617406 + 174617407.

It is an arithmetic number, because the mean of its divisors is an integer number (174617407).

Almost surely, 2^349234813 is an apocalyptic number.

It is an amenable number.

349234813 is a deficient number, since it is larger than the sum of its proper divisors (1).

349234813 is an equidigital number, since it uses as much as digits as its factorization.

349234813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 349234813 is about 18687.8252613834. The cubic root of 349234813 is about 704.2159269267.

The spelling of 349234813 in words is "three hundred forty-nine million, two hundred thirty-four thousand, eight hundred thirteen".