340006381 has 16 divisors (see below), whose sum is σ = 399970368. Its totient is φ = 284947200.

The previous prime is 340006367. The next prime is 340006391. The reversal of 340006381 is 183600043.

It is a cyclic number.

It is not a de Polignac number, because 340006381 - 2¹³ = 339998189 is a prime.

It is a super-2 number, since 2×340006381² = 231208678241434322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340006351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193750 + ... + 195496.

It is an arithmetic number, because the mean of its divisors is an integer number (24998148).

Almost surely, 2^340006381 is an apocalyptic number.

It is an amenable number.

340006381 is a deficient number, since it is larger than the sum of its proper divisors (59963987).

340006381 is a wasteful number, since it uses less digits than its factorization.

340006381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 340006381 is about 18439.2619429304. The cubic root of 340006381 is about 697.9575709767.

The spelling of 340006381 in words is "three hundred forty million, six thousand, three hundred eighty-one".