345137293 has 2 divisors, whose sum is σ = 345137294. Its totient is φ = 345137292.

The previous prime is 345137279. The next prime is 345137311. The reversal of 345137293 is 392731543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319765924 + 25371369 = 17882^2 + 5037^2 .

It is a cyclic number.

It is not a de Polignac number, because 345137293 - 2¹³ = 345129101 is a prime.

It is a super-3 number, since 3×345137293³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345137203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172568646 + 172568647.

It is an arithmetic number, because the mean of its divisors is an integer number (172568647).

Almost surely, 2^345137293 is an apocalyptic number.

It is an amenable number.

345137293 is a deficient number, since it is larger than the sum of its proper divisors (1).

345137293 is an equidigital number, since it uses as much as digits as its factorization.

345137293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 345137293 is about 18577.8710567169. The cubic root of 345137293 is about 701.4509313075.

The spelling of 345137293 in words is "three hundred forty-five million, one hundred thirty-seven thousand, two hundred ninety-three".