340522393 has 8 divisors (see below), whose sum is σ = 361163880. Its totient is φ = 319948800.

The previous prime is 340522381. The next prime is 340522397. The reversal of 340522393 is 393225043.

It can be written as a sum of positive squares in 4 ways, for example, as 185967769 + 154554624 = 13637^2 + 12432^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340522393 - 2⁵ = 340522361 is a prime.

It is a super-3 number, since 3×340522393³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340522397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6448 + ... + 26881.

It is an arithmetic number, because the mean of its divisors is an integer number (45145485).

Almost surely, 2^340522393 is an apocalyptic number.

It is an amenable number.

340522393 is a deficient number, since it is larger than the sum of its proper divisors (20641487).

340522393 is a wasteful number, since it uses less digits than its factorization.

340522393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33947.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 340522393 is about 18453.2488467478. The cubic root of 340522393 is about 698.3104785093.

The spelling of 340522393 in words is "three hundred forty million, five hundred twenty-two thousand, three hundred ninety-three".