307940471 has 2 divisors, whose sum is σ = 307940472. Its totient is φ = 307940470.

The previous prime is 307940447. The next prime is 307940513. The reversal of 307940471 is 174049703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 307940471 - 2¹⁴ = 307924087 is a prime.

It is a super-3 number, since 3×307940471³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307945471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153970235 + 153970236.

It is an arithmetic number, because the mean of its divisors is an integer number (153970236).

Almost surely, 2^307940471 is an apocalyptic number.

307940471 is a deficient number, since it is larger than the sum of its proper divisors (1).

307940471 is an equidigital number, since it uses as much as digits as its factorization.

307940471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 307940471 is about 17548.2327030388. The cubic root of 307940471 is about 675.2878304251.

The spelling of 307940471 in words is "three hundred seven million, nine hundred forty thousand, four hundred seventy-one".