240311249 has 2 divisors, whose sum is σ = 240311250. Its totient is φ = 240311248.

The previous prime is 240311243. The next prime is 240311261. The reversal of 240311249 is 942113042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238918849 + 1392400 = 15457^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 240311249 - 2¹² = 240307153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240311243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120155624 + 120155625.

It is an arithmetic number, because the mean of its divisors is an integer number (120155625).

Almost surely, 2^240311249 is an apocalyptic number.

It is an amenable number.

240311249 is a deficient number, since it is larger than the sum of its proper divisors (1).

240311249 is an equidigital number, since it uses as much as digits as its factorization.

240311249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 240311249 is about 15501.9756482843. The cubic root of 240311249 is about 621.7150304223.

The spelling of 240311249 in words is "two hundred forty million, three hundred eleven thousand, two hundred forty-nine".