1312323103 has 32 divisors (see below), whose sum is σ = 1716915200. Its totient is φ = 973990656.

The previous prime is 1312323101. The next prime is 1312323107. The reversal of 1312323103 is 3013232131.

It is a cyclic number.

It is not a de Polignac number, because 1312323103 - 2¹ = 1312323101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312323101) 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 in 31 ways as a sum of consecutive naturals, for example, 174403 + ... + 181771.

It is an arithmetic number, because the mean of its divisors is an integer number (53653600).

Almost surely, 2^1312323103 is an apocalyptic number.

1312323103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1312323103 is a deficient number, since it is larger than the sum of its proper divisors (404592097).

1312323103 is a wasteful number, since it uses less digits than its factorization.

1312323103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1312323103 is about 36226.0003726605. Note that the first 3 decimals coincide. The cubic root of 1312323103 is about 1094.8305939494.

Adding to 1312323103 its reverse (3013232131), we get a palindrome (4325555234).

It can be divided in two parts, 1312 and 323103, that added together give a triangular number (324415 = T₈₀₅).

The spelling of 1312323103 in words is "one billion, three hundred twelve million, three hundred twenty-three thousand, one hundred three".