4221140731 has 2 divisors, whose sum is σ = 4221140732. Its totient is φ = 4221140730.

The previous prime is 4221140717. The next prime is 4221140743. The reversal of 4221140731 is 1370411224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221140731 - 2¹¹ = 4221138683 is a prime.

It is a super-2 number, since 2×4221140731² = 35636058141814428722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4221140696 and 4221140705.

It is not a weakly prime, because it can be changed into another prime (4221140701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110570365 + 2110570366.

It is an arithmetic number, because the mean of its divisors is an integer number (2110570366).

Almost surely, 2^4221140731 is an apocalyptic number.

4221140731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221140731 is an equidigital number, since it uses as much as digits as its factorization.

4221140731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 4221140731 is about 64970.3065330617. The cubic root of 4221140731 is about 1616.1311850000.

Adding to 4221140731 its reverse (1370411224), we get a palindrome (5591551955).

The spelling of 4221140731 in words is "four billion, two hundred twenty-one million, one hundred forty thousand, seven hundred thirty-one".