1311300123 has 24 divisors (see below), whose sum is σ = 2037280320. Its totient is φ = 748051920.

The previous prime is 1311300113. The next prime is 1311300139. The reversal of 1311300123 is 3210031131.

It is not a de Polignac number, because 1311300123 - 2⁶ = 1311300059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311300113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83788 + ... + 98198.

It is an arithmetic number, because the mean of its divisors is an integer number (84886680).

Almost surely, 2^1311300123 is an apocalyptic number.

1311300123 is a deficient number, since it is larger than the sum of its proper divisors (725980197).

1311300123 is a wasteful number, since it uses less digits than its factorization.

1311300123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15047 (or 15040 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311300123 is about 36211.8782031532. The cubic root of 1311300123 is about 1094.5460398021.

Adding to 1311300123 its reverse (3210031131), we get a palindrome (4521331254).

The spelling of 1311300123 in words is "one billion, three hundred eleven million, three hundred thousand, one hundred twenty-three".