340858813 has 2 divisors, whose sum is σ = 340858814. Its totient is φ = 340858812.

The previous prime is 340858811. The next prime is 340858829. The reversal of 340858813 is 318858043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203547289 + 137311524 = 14267^2 + 11718^2 .

It is a cyclic number.

It is not a de Polignac number, because 340858813 - 2¹ = 340858811 is a prime.

It is a super-4 number, since 4×340858813⁴ (a number of 35 digits) contains 4444 as substring.

Together with 340858811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340858811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170429406 + 170429407.

It is an arithmetic number, because the mean of its divisors is an integer number (170429407).

Almost surely, 2^340858813 is an apocalyptic number.

It is an amenable number.

340858813 is a deficient number, since it is larger than the sum of its proper divisors (1).

340858813 is an equidigital number, since it uses as much as digits as its factorization.

340858813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 340858813 is about 18462.3620644813. The cubic root of 340858813 is about 698.5403687146.

The spelling of 340858813 in words is "three hundred forty million, eight hundred fifty-eight thousand, eight hundred thirteen".