343257493897 has 2 divisors, whose sum is σ = 343257493898. Its totient is φ = 343257493896.

The previous prime is 343257493871. The next prime is 343257493939. The reversal of 343257493897 is 798394752343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331319964816 + 11937529081 = 575604^2 + 109259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343257493897 is a prime.

It is a super-3 number, since 3×343257493897³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (343257493597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171628746948 + 171628746949.

It is an arithmetic number, because the mean of its divisors is an integer number (171628746949).

Almost surely, 2^343257493897 is an apocalyptic number.

It is an amenable number.

343257493897 is a deficient number, since it is larger than the sum of its proper divisors (1).

343257493897 is an equidigital number, since it uses as much as digits as its factorization.

343257493897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 64.

The spelling of 343257493897 in words is "three hundred forty-three billion, two hundred fifty-seven million, four hundred ninety-three thousand, eight hundred ninety-seven".