340545731 has 2 divisors, whose sum is σ = 340545732. Its totient is φ = 340545730.

The previous prime is 340545701. The next prime is 340545761. The reversal of 340545731 is 137545043.

It is a balanced prime because it is at equal distance from previous prime (340545701) and next prime (340545761).

It is a cyclic number.

It is not a de Polignac number, because 340545731 - 2¹⁴ = 340529347 is a prime.

It is a super-2 number, since 2×340545731² = 231942789804648722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340545701) 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, 170272865 + 170272866.

It is an arithmetic number, because the mean of its divisors is an integer number (170272866).

Almost surely, 2^340545731 is an apocalyptic number.

340545731 is a deficient number, since it is larger than the sum of its proper divisors (1).

340545731 is an equidigital number, since it uses as much as digits as its factorization.

340545731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 340545731 is about 18453.8811906872. The cubic root of 340545731 is about 698.3264312513.

The spelling of 340545731 in words is "three hundred forty million, five hundred forty-five thousand, seven hundred thirty-one".