309434036 has 12 divisors (see below), whose sum is σ = 542461920. Its totient is φ = 154444920.

The previous prime is 309434023. The next prime is 309434039. The reversal of 309434036 is 630434903.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 309433993 and 309434011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309434039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65456 + ... + 70023.

It is an arithmetic number, because the mean of its divisors is an integer number (45205160).

Almost surely, 2^309434036 is an apocalyptic number.

It is an amenable number.

309434036 is a deficient number, since it is larger than the sum of its proper divisors (233027884).

309434036 is a wasteful number, since it uses less digits than its factorization.

309434036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136054 (or 136052 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 309434036 is about 17590.7372216175. The cubic root of 309434036 is about 676.3778246896.

Adding to 309434036 its reverse (630434903), we get a palindrome (939868939).

The spelling of 309434036 in words is "three hundred nine million, four hundred thirty-four thousand, thirty-six".