340727531 has 2 divisors, whose sum is σ = 340727532. Its totient is φ = 340727530.

The previous prime is 340727489. The next prime is 340727579. The reversal of 340727531 is 135727043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340727531 - 2¹⁸ = 340465387 is a prime.

It is a super-2 number, since 2×340727531² = 232190500762711922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340727591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170363765 + 170363766.

It is an arithmetic number, because the mean of its divisors is an integer number (170363766).

Almost surely, 2^340727531 is an apocalyptic number.

340727531 is a deficient number, since it is larger than the sum of its proper divisors (1).

340727531 is an equidigital number, since it uses as much as digits as its factorization.

340727531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 340727531 is about 18458.8063265207. The cubic root of 340727531 is about 698.4506761017.

The spelling of 340727531 in words is "three hundred forty million, seven hundred twenty-seven thousand, five hundred thirty-one".