340631693 has 2 divisors, whose sum is σ = 340631694. Its totient is φ = 340631692.

The previous prime is 340631671. The next prime is 340631717. The reversal of 340631693 is 396136043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339222724 + 1408969 = 18418^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 340631693 - 2¹⁴ = 340615309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340631623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170315846 + 170315847.

It is an arithmetic number, because the mean of its divisors is an integer number (170315847).

Almost surely, 2^340631693 is an apocalyptic number.

It is an amenable number.

340631693 is a deficient number, since it is larger than the sum of its proper divisors (1).

340631693 is an equidigital number, since it uses as much as digits as its factorization.

340631693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 340631693 is about 18456.2101472648. The cubic root of 340631693 is about 698.3851844827.

The spelling of 340631693 in words is "three hundred forty million, six hundred thirty-one thousand, six hundred ninety-three".