340888213 has 4 divisors (see below), whose sum is σ = 342051948. Its totient is φ = 339724480.

The previous prime is 340888211. The next prime is 340888241. The reversal of 340888213 is 312888043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222666084 + 118222129 = 14922^2 + 10873^2 .

It is a cyclic number.

It is not a de Polignac number, because 340888213 - 2¹ = 340888211 is a prime.

It is a super-3 number, since 3×340888213³ (a number of 27 digits) contains 333 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 (340888211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581428 + ... + 582013.

It is an arithmetic number, because the mean of its divisors is an integer number (85512987).

Almost surely, 2^340888213 is an apocalyptic number.

It is an amenable number.

340888213 is a deficient number, since it is larger than the sum of its proper divisors (1163735).

340888213 is a wasteful number, since it uses less digits than its factorization.

340888213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163734.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 340888213 is about 18463.1582617926. The cubic root of 340888213 is about 698.5604518063.

The spelling of 340888213 in words is "three hundred forty million, eight hundred eighty-eight thousand, two hundred thirteen".