240813497 has 2 divisors, whose sum is σ = 240813498. Its totient is φ = 240813496.

The previous prime is 240813491. The next prime is 240813523. The reversal of 240813497 is 794318042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190743721 + 50069776 = 13811^2 + 7076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240813497 is a prime.

It is a super-2 number, since 2×240813497² = 115982280674738018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240813497.

It is not a weakly prime, because it can be changed into another prime (240813491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120406748 + 120406749.

It is an arithmetic number, because the mean of its divisors is an integer number (120406749).

Almost surely, 2^240813497 is an apocalyptic number.

It is an amenable number.

240813497 is a deficient number, since it is larger than the sum of its proper divisors (1).

240813497 is an equidigital number, since it uses as much as digits as its factorization.

240813497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 240813497 is about 15518.1666765118. The cubic root of 240813497 is about 622.1478550021.

The spelling of 240813497 in words is "two hundred forty million, eight hundred thirteen thousand, four hundred ninety-seven".