340931329 has 2 divisors, whose sum is σ = 340931330. Its totient is φ = 340931328.

The previous prime is 340931303. The next prime is 340931333. The reversal of 340931329 is 923139043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235561104 + 105370225 = 15348^2 + 10265^2 .

It is an emirp because it is prime and its reverse (923139043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340931329 - 2²⁷ = 206713601 is a prime.

It is a pancake number, because a pancake can be divided into 340931329 parts by 26112 straight cuts.

It is equal to p_18342178 and since 340931329 and 18342178 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 340931294 and 340931303.

It is not a weakly prime, because it can be changed into another prime (340931629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170465664 + 170465665.

It is an arithmetic number, because the mean of its divisors is an integer number (170465665).

Almost surely, 2^340931329 is an apocalyptic number.

It is an amenable number.

340931329 is a deficient number, since it is larger than the sum of its proper divisors (1).

340931329 is an equidigital number, since it uses as much as digits as its factorization.

340931329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 340931329 is about 18464.3258474281. The cubic root of 340931329 is about 698.5899021868.

The spelling of 340931329 in words is "three hundred forty million, nine hundred thirty-one thousand, three hundred twenty-nine".