4156312243 has 2 divisors, whose sum is σ = 4156312244. Its totient is φ = 4156312242.

The previous prime is 4156312241. The next prime is 4156312271. The reversal of 4156312243 is 3422136514.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4156312243 - 2¹ = 4156312241 is a prime.

It is a super-2 number, since 2×4156312243² = 34549862922623382098, which contains 22 as substring.

Together with 4156312241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4156312241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078156121 + 2078156122.

It is an arithmetic number, because the mean of its divisors is an integer number (2078156122).

Almost surely, 2^4156312243 is an apocalyptic number.

4156312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156312243 is an equidigital number, since it uses as much as digits as its factorization.

4156312243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 4156312243 is about 64469.4675253333. The cubic root of 4156312243 is about 1607.8149238479.

Adding to 4156312243 its reverse (3422136514), we get a palindrome (7578448757).

The spelling of 4156312243 in words is "four billion, one hundred fifty-six million, three hundred twelve thousand, two hundred forty-three".