1023187213 has 2 divisors, whose sum is σ = 1023187214. Its totient is φ = 1023187212.

The previous prime is 1023187157. The next prime is 1023187237. The reversal of 1023187213 is 3127813201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1023168169 + 19044 = 31987^2 + 138^2 .

It is an emirp because it is prime and its reverse (3127813201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023187213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023187273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511593606 + 511593607.

It is an arithmetic number, because the mean of its divisors is an integer number (511593607).

Almost surely, 2^1023187213 is an apocalyptic number.

It is an amenable number.

1023187213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023187213 is an equidigital number, since it uses as much as digits as its factorization.

1023187213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1023187213 is about 31987.2976820487. The cubic root of 1023187213 is about 1007.6700903035.

The spelling of 1023187213 in words is "one billion, twenty-three million, one hundred eighty-seven thousand, two hundred thirteen".