2216751731 has 2 divisors, whose sum is σ = 2216751732. Its totient is φ = 2216751730.

The previous prime is 2216751697. The next prime is 2216751743. The reversal of 2216751731 is 1371576122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2216751731 - 2¹⁰ = 2216750707 is a prime.

It is a super-2 number, since 2×2216751731² = 9827976473782992722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2216751691 and 2216751700.

It is not a weakly prime, because it can be changed into another prime (2216751791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108375865 + 1108375866.

It is an arithmetic number, because the mean of its divisors is an integer number (1108375866).

Almost surely, 2^2216751731 is an apocalyptic number.

2216751731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216751731 is an equidigital number, since it uses as much as digits as its factorization.

2216751731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 2216751731 is about 47082.3930041794. The cubic root of 2216751731 is about 1303.8841880521.

The spelling of 2216751731 in words is "two billion, two hundred sixteen million, seven hundred fifty-one thousand, seven hundred thirty-one".