343480639 has 2 divisors, whose sum is σ = 343480640. Its totient is φ = 343480638.

The previous prime is 343480607. The next prime is 343480661. The reversal of 343480639 is 936084343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 343480639 - 2⁵ = 343480607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343480339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171740319 + 171740320.

It is an arithmetic number, because the mean of its divisors is an integer number (171740320).

Almost surely, 2^343480639 is an apocalyptic number.

343480639 is a deficient number, since it is larger than the sum of its proper divisors (1).

343480639 is an equidigital number, since it uses as much as digits as its factorization.

343480639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 343480639 is about 18533.2306681809. The cubic root of 343480639 is about 700.3268127016.

The spelling of 343480639 in words is "three hundred forty-three million, four hundred eighty thousand, six hundred thirty-nine".