308011349 has 6 divisors (see below), whose sum is σ = 318730230. Its totient is φ = 297299016.

The previous prime is 308011343. The next prime is 308011369. The reversal of 308011349 is 943110803.

It can be written as a sum of positive squares in only one way, i.e., 265527025 + 42484324 = 16295^2 + 6518^2 .

It is not a de Polignac number, because 308011349 - 2²⁴ = 291234133 is a prime.

It is a super-2 number, since 2×308011349² = 189741982225599602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308011343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92882 + ... + 96140.

It is an arithmetic number, because the mean of its divisors is an integer number (53121705).

Almost surely, 2^308011349 is an apocalyptic number.

It is an amenable number.

308011349 is a deficient number, since it is larger than the sum of its proper divisors (10718881).

308011349 is an frugal number, since it uses more digits than its factorization.

308011349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547 (or 3288 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 308011349 is about 17550.2521064513. The cubic root of 308011349 is about 675.3396363028.

Multiplying 308011349 by its sum of digits (29), we get a square (8932329121 = 94511²).

308011349 divided by its sum of digits (29) gives a square (10621081 = 3259²).

The spelling of 308011349 in words is "three hundred eight million, eleven thousand, three hundred forty-nine".