1213130123 has 2 divisors, whose sum is σ = 1213130124. Its totient is φ = 1213130122.

The previous prime is 1213130071. The next prime is 1213130131. The reversal of 1213130123 is 3210313121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3210313121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213130123 - 2¹² = 1213126027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213130143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606565061 + 606565062.

It is an arithmetic number, because the mean of its divisors is an integer number (606565062).

Almost surely, 2^1213130123 is an apocalyptic number.

1213130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213130123 is an equidigital number, since it uses as much as digits as its factorization.

1213130123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213130123 is about 34830.0175566996. The cubic root of 1213130123 is about 1066.5203067523.

Adding to 1213130123 its reverse (3210313121), we get a palindrome (4423443244).

The spelling of 1213130123 in words is "one billion, two hundred thirteen million, one hundred thirty thousand, one hundred twenty-three".