309130 has 16 divisors (see below), whose sum is σ = 586080. Its totient is φ = 117072.

The previous prime is 309121. The next prime is 309131. The reversal of 309130 is 31903.

It is a happy number.

It is a super-2 number, since 2×309130² = 191122713800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (309131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (36630).

2³⁰⁹¹³⁰ is an apocalyptic number.

309130 is a deficient number, since it is larger than the sum of its proper divisors (276950).

309130 is a wasteful number, since it uses less digits than its factorization.

309130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 309130 is about 555.9946042904. The cubic root of 309130 is about 67.6156225929.

The spelling of 309130 in words is "three hundred nine thousand, one hundred thirty".