340065431 has 2 divisors, whose sum is σ = 340065432. Its totient is φ = 340065430.

The previous prime is 340065403. The next prime is 340065449. The reversal of 340065431 is 134560043.

It is a strong prime.

It is an emirp because it is prime and its reverse (134560043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340065431 is a prime.

It is a super-2 number, since 2×340065431² = 231288994722431522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340065431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340065031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170032715 + 170032716.

It is an arithmetic number, because the mean of its divisors is an integer number (170032716).

Almost surely, 2^340065431 is an apocalyptic number.

340065431 is a deficient number, since it is larger than the sum of its proper divisors (1).

340065431 is an equidigital number, since it uses as much as digits as its factorization.

340065431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 340065431 is about 18440.8630763313. The cubic root of 340065431 is about 697.9979741487.

The spelling of 340065431 in words is "three hundred forty million, sixty-five thousand, four hundred thirty-one".