344691481 has 2 divisors, whose sum is σ = 344691482. Its totient is φ = 344691480.

The previous prime is 344691461. The next prime is 344691517. The reversal of 344691481 is 184196443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324576256 + 20115225 = 18016^2 + 4485^2 .

It is a cyclic number.

It is not a de Polignac number, because 344691481 - 2¹⁷ = 344560409 is a prime.

It is a super-2 number, since 2×344691481² = 237624434147946722, which contains 22 as substring.

It is equal to p_18533695 and since 344691481 and 18533695 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (344691461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172345740 + 172345741.

It is an arithmetic number, because the mean of its divisors is an integer number (172345741).

Almost surely, 2^344691481 is an apocalyptic number.

It is an amenable number.

344691481 is a deficient number, since it is larger than the sum of its proper divisors (1).

344691481 is an equidigital number, since it uses as much as digits as its factorization.

344691481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 344691481 is about 18565.8687111592. The cubic root of 344691481 is about 701.1487810330.

The spelling of 344691481 in words is "three hundred forty-four million, six hundred ninety-one thousand, four hundred eighty-one".