1023043213 has 2 divisors, whose sum is σ = 1023043214. Its totient is φ = 1023043212.

The previous prime is 1023043211. The next prime is 1023043247. The reversal of 1023043213 is 3123403201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775232649 + 247810564 = 27843^2 + 15742^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023043213 - 2¹ = 1023043211 is a prime.

Together with 1023043211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023043211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511521606 + 511521607.

It is an arithmetic number, because the mean of its divisors is an integer number (511521607).

Almost surely, 2^1023043213 is an apocalyptic number.

It is an amenable number.

1023043213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023043213 is an equidigital number, since it uses as much as digits as its factorization.

1023043213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1023043213 is about 31985.0467093609. The cubic root of 1023043213 is about 1007.6228160286.

Adding to 1023043213 its reverse (3123403201), we get a palindrome (4146446414).

The spelling of 1023043213 in words is "one billion, twenty-three million, forty-three thousand, two hundred thirteen".