1313012123 has 2 divisors, whose sum is σ = 1313012124. Its totient is φ = 1313012122.

The previous prime is 1313012101. The next prime is 1313012189. The reversal of 1313012123 is 3212103131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313012123 - 2⁶ = 1313012059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313012923) 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, 656506061 + 656506062.

It is an arithmetic number, because the mean of its divisors is an integer number (656506062).

Almost surely, 2^1313012123 is an apocalyptic number.

1313012123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313012123 is an equidigital number, since it uses as much as digits as its factorization.

1313012123 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 1313012123 is about 36235.5091450362. The cubic root of 1313012123 is about 1095.0221697867.

Adding to 1313012123 its reverse (3212103131), we get a palindrome (4525115254).

The spelling of 1313012123 in words is "one billion, three hundred thirteen million, twelve thousand, one hundred twenty-three".