340381427 has 2 divisors, whose sum is σ = 340381428. Its totient is φ = 340381426.

The previous prime is 340381397. The next prime is 340381451. The reversal of 340381427 is 724183043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340381427 - 2¹⁶ = 340315891 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340381393 and 340381402.

It is not a weakly prime, because it can be changed into another prime (340381477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170190713 + 170190714.

It is an arithmetic number, because the mean of its divisors is an integer number (170190714).

Almost surely, 2^340381427 is an apocalyptic number.

340381427 is a deficient number, since it is larger than the sum of its proper divisors (1).

340381427 is an equidigital number, since it uses as much as digits as its factorization.

340381427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 340381427 is about 18449.4289071505. The cubic root of 340381427 is about 698.2141053843.

The spelling of 340381427 in words is "three hundred forty million, three hundred eighty-one thousand, four hundred twenty-seven".