2143223437 has 2 divisors, whose sum is σ = 2143223438. Its totient is φ = 2143223436.

The previous prime is 2143223429. The next prime is 2143223441. The reversal of 2143223437 is 7343223412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1822777636 + 320445801 = 42694^2 + 17901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143223437 - 2³ = 2143223429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143223399 and 2143223408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143223417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071611718 + 1071611719.

It is an arithmetic number, because the mean of its divisors is an integer number (1071611719).

Almost surely, 2^2143223437 is an apocalyptic number.

It is an amenable number.

2143223437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143223437 is an equidigital number, since it uses as much as digits as its factorization.

2143223437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 31.

The square root of 2143223437 is about 46294.9612484987. The cubic root of 2143223437 is about 1289.3054444682.

Adding to 2143223437 its reverse (7343223412), we get a palindrome (9486446849).

The spelling of 2143223437 in words is "two billion, one hundred forty-three million, two hundred twenty-three thousand, four hundred thirty-seven".