343423997 has 6 divisors (see below), whose sum is σ = 399493278. Its totient is φ = 294363384.

The previous prime is 343423963. The next prime is 343424009. The reversal of 343423997 is 799324343.

It can be written as a sum of positive squares in only one way, i.e., 195412441 + 148011556 = 13979^2 + 12166^2 .

It is not a de Polignac number, because 343423997 - 2¹⁰ = 343422973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343423907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3504278 + ... + 3504375.

It is an arithmetic number, because the mean of its divisors is an integer number (66582213).

Almost surely, 2^343423997 is an apocalyptic number.

It is an amenable number.

343423997 is a deficient number, since it is larger than the sum of its proper divisors (56069281).

343423997 is an equidigital number, since it uses as much as digits as its factorization.

343423997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008667 (or 7008660 counting only the distinct ones).

The product of its digits is 489888, while the sum is 44.

The square root of 343423997 is about 18531.7024852009. The cubic root of 343423997 is about 700.2883145666.

The spelling of 343423997 in words is "three hundred forty-three million, four hundred twenty-three thousand, nine hundred ninety-seven".