2281720215 has 16 divisors (see below), whose sum is σ = 3694739328. Its totient is φ = 1202255136.

The previous prime is 2281720211. The next prime is 2281720219. The reversal of 2281720215 is 5120271822.

It is an interprime number because it is at equal distance from previous prime (2281720211) and next prime (2281720219).

It is not a de Polignac number, because 2281720215 - 2² = 2281720211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281720211) 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, 915109 + ... + 917598.

It is an arithmetic number, because the mean of its divisors is an integer number (230921208).

Almost surely, 2^2281720215 is an apocalyptic number.

2281720215 is a deficient number, since it is larger than the sum of its proper divisors (1413019113).

2281720215 is a wasteful number, since it uses less digits than its factorization.

2281720215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832798.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2281720215 is about 47767.3551183232. The cubic root of 2281720215 is about 1316.4997976494.

The spelling of 2281720215 in words is "two billion, two hundred eighty-one million, seven hundred twenty thousand, two hundred fifteen".