340203011 has 4 divisors (see below), whose sum is σ = 340689024. Its totient is φ = 339717000.

The previous prime is 340203007. The next prime is 340203013. The reversal of 340203011 is 110302043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110302043 = 23 ⋅4795741.

It is a cyclic number.

It is not a de Polignac number, because 340203011 - 2² = 340203007 is a prime.

It is a super-3 number, since 3×340203011³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340203013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241955 + ... + 243356.

It is an arithmetic number, because the mean of its divisors is an integer number (85172256).

Almost surely, 2^340203011 is an apocalyptic number.

340203011 is a deficient number, since it is larger than the sum of its proper divisors (486013).

340203011 is an equidigital number, since it uses as much as digits as its factorization.

340203011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486012.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 340203011 is about 18444.5930017444. The cubic root of 340203011 is about 698.0920909520.

Adding to 340203011 its reverse (110302043), we get a palindrome (450505054).

The spelling of 340203011 in words is "three hundred forty million, two hundred three thousand, eleven".