240621347 has 2 divisors, whose sum is σ = 240621348. Its totient is φ = 240621346.

The previous prime is 240621299. The next prime is 240621361. The reversal of 240621347 is 743126042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240621347 - 2¹⁶ = 240555811 is a prime.

It is not a weakly prime, because it can be changed into another prime (240621047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120310673 + 120310674.

It is an arithmetic number, because the mean of its divisors is an integer number (120310674).

Almost surely, 2^240621347 is an apocalyptic number.

240621347 is a deficient number, since it is larger than the sum of its proper divisors (1).

240621347 is an equidigital number, since it uses as much as digits as its factorization.

240621347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 240621347 is about 15511.9743101902. The cubic root of 240621347 is about 621.9823361505.

Adding to 240621347 its reverse (743126042), we get a palindrome (983747389).

The spelling of 240621347 in words is "two hundred forty million, six hundred twenty-one thousand, three hundred forty-seven".