1311203104 has 48 divisors (see below), whose sum is σ = 2610558720. Its totient is φ = 648244480.

The previous prime is 1311203087. The next prime is 1311203107. The reversal of 1311203104 is 4013021131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1311203107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007642 + ... + 2008294.

It is an arithmetic number, because the mean of its divisors is an integer number (54386640).

Almost surely, 2^1311203104 is an apocalyptic number.

It is an amenable number.

1311203104 is a deficient number, since it is larger than the sum of its proper divisors (1299355616).

1311203104 is a wasteful number, since it uses less digits than its factorization.

1311203104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311203104 is about 36210.5385764973. The cubic root of 1311203104 is about 1094.5190451222.

Adding to 1311203104 its reverse (4013021131), we get a palindrome (5324224235).

The spelling of 1311203104 in words is "one billion, three hundred eleven million, two hundred three thousand, one hundred four".