340204537 has 2 divisors, whose sum is σ = 340204538. Its totient is φ = 340204536.

The previous prime is 340204507. The next prime is 340204541. The reversal of 340204537 is 735402043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273439296 + 66765241 = 16536^2 + 8171^2 .

It is an emirp because it is prime and its reverse (735402043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340204537 is a prime.

It is not a weakly prime, because it can be changed into another prime (340204507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170102268 + 170102269.

It is an arithmetic number, because the mean of its divisors is an integer number (170102269).

Almost surely, 2^340204537 is an apocalyptic number.

It is an amenable number.

340204537 is a deficient number, since it is larger than the sum of its proper divisors (1).

340204537 is an equidigital number, since it uses as much as digits as its factorization.

340204537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 340204537 is about 18444.6343688347. The cubic root of 340204537 is about 698.0931347277.

The spelling of 340204537 in words is "three hundred forty million, two hundred four thousand, five hundred thirty-seven".