249320311 has 2 divisors, whose sum is σ = 249320312. Its totient is φ = 249320310.

The previous prime is 249320293. The next prime is 249320339. The reversal of 249320311 is 113023942.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249320311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249320381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124660155 + 124660156.

It is an arithmetic number, because the mean of its divisors is an integer number (124660156).

Almost surely, 2^249320311 is an apocalyptic number.

249320311 is a deficient number, since it is larger than the sum of its proper divisors (1).

249320311 is an equidigital number, since it uses as much as digits as its factorization.

249320311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 249320311 is about 15789.8800185435. The cubic root of 249320311 is about 629.3891037969.

The spelling of 249320311 in words is "two hundred forty-nine million, three hundred twenty thousand, three hundred eleven".