240313391 has 4 divisors (see below), whose sum is σ = 241310784. Its totient is φ = 239316000.

The previous prime is 240313379. The next prime is 240313393. The reversal of 240313391 is 193313042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240313391 - 2¹⁴ = 240297007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240313391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240313393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498335 + ... + 498816.

It is an arithmetic number, because the mean of its divisors is an integer number (60327696).

Almost surely, 2^240313391 is an apocalyptic number.

240313391 is a deficient number, since it is larger than the sum of its proper divisors (997393).

240313391 is an equidigital number, since it uses as much as digits as its factorization.

240313391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997392.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 240313391 is about 15502.0447360985. The cubic root of 240313391 is about 621.7168776234.

The spelling of 240313391 in words is "two hundred forty million, three hundred thirteen thousand, three hundred ninety-one".