340551947 has 2 divisors, whose sum is σ = 340551948. Its totient is φ = 340551946.

The previous prime is 340551943. The next prime is 340551971. The reversal of 340551947 is 749155043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340551947 - 2² = 340551943 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340551947.

It is not a weakly prime, because it can be changed into another prime (340551943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170275973 + 170275974.

It is an arithmetic number, because the mean of its divisors is an integer number (170275974).

Almost surely, 2^340551947 is an apocalyptic number.

340551947 is a deficient number, since it is larger than the sum of its proper divisors (1).

340551947 is an equidigital number, since it uses as much as digits as its factorization.

340551947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 340551947 is about 18454.0496097740. The cubic root of 340551947 is about 698.3306800891.

The spelling of 340551947 in words is "three hundred forty million, five hundred fifty-one thousand, nine hundred forty-seven".