1423213237 has 2 divisors, whose sum is σ = 1423213238. Its totient is φ = 1423213236.

The previous prime is 1423213229. The next prime is 1423213243. The reversal of 1423213237 is 7323123241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1310874436 + 112338801 = 36206^2 + 10599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423213237 - 2³ = 1423213229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423213217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711606618 + 711606619.

It is an arithmetic number, because the mean of its divisors is an integer number (711606619).

Almost surely, 2^1423213237 is an apocalyptic number.

It is an amenable number.

1423213237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423213237 is an equidigital number, since it uses as much as digits as its factorization.

1423213237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 1423213237 is about 37725.4984990258. The cubic root of 1423213237 is about 1124.8380308713.

Adding to 1423213237 its reverse (7323123241), we get a palindrome (8746336478).

The spelling of 1423213237 in words is "one billion, four hundred twenty-three million, two hundred thirteen thousand, two hundred thirty-seven".