345422437 has 2 divisors, whose sum is σ = 345422438. Its totient is φ = 345422436.

The previous prime is 345422431. The next prime is 345422449. The reversal of 345422437 is 734224543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341732196 + 3690241 = 18486^2 + 1921^2 .

It is a cyclic number.

It is not a de Polignac number, because 345422437 - 2⁷ = 345422309 is a prime.

It is equal to p_18570715 and since 345422437 and 18570715 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345422431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172711218 + 172711219.

It is an arithmetic number, because the mean of its divisors is an integer number (172711219).

Almost surely, 2^345422437 is an apocalyptic number.

It is an amenable number.

345422437 is a deficient number, since it is larger than the sum of its proper divisors (1).

345422437 is an equidigital number, since it uses as much as digits as its factorization.

345422437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 34.

The square root of 345422437 is about 18585.5437639042. The cubic root of 345422437 is about 701.6440520079.

The spelling of 345422437 in words is "three hundred forty-five million, four hundred twenty-two thousand, four hundred thirty-seven".