720312241 has 16 divisors (see below), whose sum is σ = 802716480. Its totient is φ = 640793920.

The previous prime is 720312239. The next prime is 720312247. The reversal of 720312241 is 142213027.

It is a cyclic number.

It is not a de Polignac number, because 720312241 - 2¹ = 720312239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720312247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256875 + ... + 259663.

It is an arithmetic number, because the mean of its divisors is an integer number (50169780).

Almost surely, 2^720312241 is an apocalyptic number.

It is an amenable number.

720312241 is a deficient number, since it is larger than the sum of its proper divisors (82404239).

720312241 is a wasteful number, since it uses less digits than its factorization.

720312241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 720312241 is about 26838.6333668464. The cubic root of 720312241 is about 896.4104933924.

Adding to 720312241 its reverse (142213027), we get a palindrome (862525268).

The spelling of 720312241 in words is "seven hundred twenty million, three hundred twelve thousand, two hundred forty-one".