340872907 has 2 divisors, whose sum is σ = 340872908. Its totient is φ = 340872906.

The previous prime is 340872887. The next prime is 340872919. The reversal of 340872907 is 709278043.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340872907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340872907.

It is not a weakly prime, because it can be changed into another prime (340879907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170436453 + 170436454.

It is an arithmetic number, because the mean of its divisors is an integer number (170436454).

Almost surely, 2^340872907 is an apocalyptic number.

340872907 is a deficient number, since it is larger than the sum of its proper divisors (1).

340872907 is an equidigital number, since it uses as much as digits as its factorization.

340872907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 340872907 is about 18462.7437560077. The cubic root of 340872907 is about 698.5499964469.

The spelling of 340872907 in words is "three hundred forty million, eight hundred seventy-two thousand, nine hundred seven".