309348950 has 12 divisors (see below), whose sum is σ = 575389140. Its totient is φ = 123739560.

The previous prime is 309348947. The next prime is 309348967. The reversal of 309348950 is 59843903.

It is a super-2 number, since 2×309348950² = 191393545732205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 309348898 and 309348907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3093440 + ... + 3093539.

It is an arithmetic number, because the mean of its divisors is an integer number (47949095).

Almost surely, 2^309348950 is an apocalyptic number.

309348950 is a deficient number, since it is larger than the sum of its proper divisors (266040190).

309348950 is a wasteful number, since it uses less digits than its factorization.

309348950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186991 (or 6186986 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 309348950 is about 17588.3185665941. The cubic root of 309348950 is about 676.3158237970.

The spelling of 309348950 in words is "three hundred nine million, three hundred forty-eight thousand, nine hundred fifty".