340202813 has 8 divisors (see below), whose sum is σ = 347888088. Its totient is φ = 332564544.

The previous prime is 340202783. The next prime is 340202833. The reversal of 340202813 is 318202043.

It can be written as a sum of positive squares in 4 ways, for example, as 58564 + 340144249 = 242^2 + 18443^2 .

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 340202813 - 2⁶ = 340202749 is a prime.

It is a super-2 number, since 2×340202813² = 231475907946225938, 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 (340202833) 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, 3095 + ... + 26267.

It is an arithmetic number, because the mean of its divisors is an integer number (43486011).

Almost surely, 2^340202813 is an apocalyptic number.

It is an amenable number.

340202813 is a deficient number, since it is larger than the sum of its proper divisors (7685275).

340202813 is a wasteful number, since it uses less digits than its factorization.

340202813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23503.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 340202813 is about 18444.5876343170. The cubic root of 340202813 is about 698.0919555208.

Adding to 340202813 its reverse (318202043), we get a palindrome (658404856).

The spelling of 340202813 in words is "three hundred forty million, two hundred two thousand, eight hundred thirteen".