354420343 has 2 divisors, whose sum is σ = 354420344. Its totient is φ = 354420342.

The previous prime is 354420289. The next prime is 354420349. The reversal of 354420343 is 343024453.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354420343 is a prime.

It is a super-2 number, since 2×354420343² = 251227559064475298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354420349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177210171 + 177210172.

It is an arithmetic number, because the mean of its divisors is an integer number (177210172).

Almost surely, 2^354420343 is an apocalyptic number.

354420343 is a deficient number, since it is larger than the sum of its proper divisors (1).

354420343 is an equidigital number, since it uses as much as digits as its factorization.

354420343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 354420343 is about 18826.0548974022. The cubic root of 354420343 is about 707.6842776860.

Adding to 354420343 its reverse (343024453), we get a palindrome (697444796).

The spelling of 354420343 in words is "three hundred fifty-four million, four hundred twenty thousand, three hundred forty-three".