307243216 has 20 divisors (see below), whose sum is σ = 680324512. Its totient is φ = 131675616.

The previous prime is 307243207. The next prime is 307243231. The reversal of 307243216 is 612342703.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371510 + ... + 1371733.

Almost surely, 2^307243216 is an apocalyptic number.

It is an amenable number.

307243216 is an abundant number, since it is smaller than the sum of its proper divisors (373081296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

307243216 is a wasteful number, since it uses less digits than its factorization.

307243216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743258 (or 2743252 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 307243216 is about 17528.3546290004. The cubic root of 307243216 is about 674.7777711971. Note that the first 5 decimals are identical.

Adding to 307243216 its reverse (612342703), we get a palindrome (919585919).

The spelling of 307243216 in words is "three hundred seven million, two hundred forty-three thousand, two hundred sixteen".