307473139 has 2 divisors, whose sum is σ = 307473140. Its totient is φ = 307473138.

The previous prime is 307473119. The next prime is 307473151. The reversal of 307473139 is 931374703.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 307473139 - 2⁷ = 307473011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 307473098 and 307473107.

It is not a weakly prime, because it can be changed into another prime (307473119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153736569 + 153736570.

It is an arithmetic number, because the mean of its divisors is an integer number (153736570).

Almost surely, 2^307473139 is an apocalyptic number.

307473139 is a deficient number, since it is larger than the sum of its proper divisors (1).

307473139 is an equidigital number, since it uses as much as digits as its factorization.

307473139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 307473139 is about 17534.9120043415. The cubic root of 307473139 is about 674.9460507408.

The spelling of 307473139 in words is "three hundred seven million, four hundred seventy-three thousand, one hundred thirty-nine".